There has never been much doubt about Stuart Hogg's ability to electrify a crowd, but the 22-year-old has blown enough fuses in his time to make you wonder if his own internal wiring was quite what it should be.

Hogg's most spectacular short-circuit was against Wales, in the final game of last season's RBS 6 Nations Championship, when his reckless challenge on Welsh fly-half Dan Biggar resulted him becoming only the third Scot, after Nathan Hines and Scott Murray, to be sent off during a Test match.

But the sparks have flown on other occasions as well, and admiration for Hogg's luminous gifts have often been qualified by reservations about his excitability, hot-headedness and occasional flashes of petulance.

When he began to establish himself three seasons ago, his mentor Jim Renwick confessed that even he could not gild Hogg's lily as a player, but he had been encouraging him to try to "keep the heid" a little more.

In which light, the pairing of Hogg and Mark Bennett as room-mates

in the Scotland team hotel these past few days is either a blunder of epic proportions or one of the cleverest pieces of man-management ever pulled off. Conventional wisdom would suggest the debutant Bennett should be guided through the days before his first Test by a calmer figure than his Glasgow team-mate, but it is easy to speculate that the arrangement has not been put in place for Bennett's benefit alone.

In short, handing Hogg a degree of responsibility for another player's wellbeing might just be the way to knock some rough edge off his own habits.

"He is absolutely buzzing, bouncing around the bedroom and ready to rock and roll," said Hogg of the 21-year-old, although he admitted that he was not the most obvious candidate to be doing the childminding job. "I'm not sure I'm the kind of guy to keep him calm," he smiled. "I think that's the blind leading the blind."

Yet even in Glasgow colours Hogg has seemed a more mature figure this season, now more likely to be spotted words of encouragement to his colleagues than barking at them.

Maybe that is just the growing up process for a player who became Scotland's youngest international for almost 50 years when he made his debut against Wales in 2012, but it also signifies a gathering self-awareness, as well as higher ambitions still.

"I would love to be a captain of Scotland," he declared on the eve of the viagogo Autumn Test clash with Argentina at BT Murrayfield. "I spend a lot of time with the senior boys and learn a lot from them. One day, I would like to be a leader of some sort."

Come half-past five, however, Hogg's leadership inclinations should be directed towards setting an example for his team-mates when it comes to taking chances. The Scots have lost their last four matches against the Pumas in Edinburgh - bizarrely, they have won their last four against the Pumas on Argentinian soil -

and a feature of every one of those setbacks was how easily they wre frustrated by the South Americans.

It has been a frequent assertion from within the Scotland camp this week that they want to cause chaos at Murrayfield; in translation, that means they want to stop their opponents settling into the sort of stifling rhythm they have established on their last few visits to the place.

Will it help that Hogg and Bennett will be joined by another eight Glasgow Warriors in the starting lineup, and four more on the bench? In 2008, Wales coach Warren Gatland chose 13 Ospreys in his starting lineup against England; two months later the Welsh were celebrating a grand slam.

There is excitement around the prospect that the six Glasgow backs who have been chosen can produce the free-running style - and, more critically, the tries - that have seen them win all but one of their nine competitive games this season.

But in acknowledging the potential of one of the most exciting attacks in European club rugby, it ought to be remembered that Glasgow also had six backs in the starting lineup in Scotland's last match - and that ended in a 55-6 defeat by South Africa.

Clearly, there have to be improvements up front. The Scots were starved of possession that June day in Port Elizabeth, but they look rather more likely to achieve parity, or possibly better, against an Argentinian pack that is not exactly hr most formidable to emerge from the Pampas (or, for that matter, the middle-class suburbs of Buenos Aires where most of their players learn the game).

Argentina deserve respect for their history-making victory over Australia last month, their first Rugby Championship win in 18 games. The Scottish coaches have been stressing that result in public all week, but in private, with their players, they tell a different story. Australia had been in turmoil, riven by internal dissent, in the week leading up their 21-17 loss in Mendoza. Argentina had been unimpressive away from home.

Today, then, is a chance for Scotland to put down a marker. On the summer tour, coach Vern Cotter led a side that had effectively been imposed on him, but the squad he has now is entirely his own, and it is his kind of game they will play. Which suits Hogg just fine.

"We have different structures in place and we are trying to play a different brand of rugby," said the full-back. "Get quick ball, play on the front foot, put the carrot in front of the donkey by kicking the ball in behind them and keeping the forwards going forward.

"It is an exciting way to play. It is basically free rein to do what we want within certain restraints obviously. I am excited about this next chapter we are about to create, and so are the rest of the boys. Have a go is something we like to say when somebody is on the ball. Instead of looking to pass or kick, try and beat players. Side-step, do what you want to do. He is big on that and that excites me and a lot of other boys in the team."

Critical areas where the game could be won

1. The set-piece

The scrum is an area of traditional Argentinian strength, although it has lost some of its old dominance as they have developed other parts of their game. Euan Murray has been outstanding for Glasgow recently, and the mighty prop will have to put in another big shift. Scotland should have the edge in the lineouts, as long as Ross Ford is accurate.

2. The midfield

Scotland colts Alex Dunbar and Mark Bennett have the makings of a great duo but they are up against Juan Martin Hernandez and Marcelo Bosch of Racing Metro and Saracens respectively - a formidable and huge pairing. If Bennett can get an early line-break in then his confidence will soar.

3. The breakdown

The inexperience of the Scotland side is found in a back row that has a combined total of just 11 caps. Against that, the Argentinians are not as strong in that area as once they were. Of the Pumas' breakaways, only No.8 Leonardo Senatore plays in Europe - and that for second-tier English side Worcester. Still, they will make it a scrap, and Rob Harley will need to be at his destructive best.