White, the 77-times-capped former Scotland captain, finished his career at Clermont-Auvergne and saw at close quarters how Toulon, funded by their flamboyant president, Mourad Boudjellal, were transformed from second-division also-rans into "galacticos" by recruiting some of the biggest Test names.
Understandably, therefore, White has no illusions over the intimidating cauldron, into which Gregor Townsend's personnel will stride this weekend. Boudjellal's signing policy might be similar to Manchester City or Real Madrid in the football sphere - and his outbursts against referees and rival coaches have provoked accusations from rivals in his homeland that he cares less about sport than filthy lucre - but Toulon boast a bravado and swagger, allied to some seriously impressive exploits in the last three years.
"They are the form team in Europe and have an unbelievably strong squad, so they will be favourites, but Glasgow have been the form side in the RaboDirect [tournament], so they can travel to France with plenty of confidence," said White. "I have played at Stade Mayol and their fans are absolutely passionate and can become pretty unpleasant in their abuse of opponents, yet that can work against Toulon if they don't get things their way. If the Scots can stay in touch and force the hosts into mistakes, it doesn't take long for the supporters to turn against their club.
"I have been delighted with Gregor and the fashion in which he has steered his club to the top of the league: it demonstrates that Scottish coaches can succeed at a high level. But he will be aware how vitally important it is that Glasgow manage at least one victory in their first two matches [in the Cup]. They are in a tough section [it includes Exeter and Cardiff], but if you can pick up one away win and beat all the rest in Glasgow - that is non-negotiable - then you are definitely going to be in with a chance of qualifying."
White admits he has some sympathy with the French and English organisations striving to create an alternative to the Heineken Cup, but he does not believe plans for a new event will prevail, given the widespread perception of the competition as being the best in the world. Yet the looming sabbath clash does offer a beguiling match between Boudjellal's United Nations brigade and the SRU-financed Warriors.
What cannot be denied is the transformation which the 53-year-old comic-book publisher has orchestrated at Toulon. According to Gallic journalist Adrien Larelle: "The 15,000 seats of Stade Mayol are sold out for almost every game, helped by the fact that Toulon have 10,000 season-ticket holders. The club also relocated some of its fixtures to the Velodrome in Marseilles [which holds 60,000], or Nice, such as last weekend's tussle against Clermont [who were defeated, albeit narrowly, in an acrimonious contest].
"This season, the club budget has reached €30m, the second biggest in France, just behind Toulouse. €12.2m of that comes from tickets and retail sales, while sponsorship brings in €9.6m and broadcasting rights €2.1m. The budget has doubled in the last four years and Boudjellal isn't worried about his detractors. He said recently: 'I am only investing my money. When I have no fun any more, I will quit.'"
It is this sort of laissez-faire approach which has led to accusations of Toulon being nothing more than a bunch of mercenaries. But, there again, when you can attract talent of the calibre of Matt Giteau, Jonny Wilkinson, Juan Martin Fernandez Lobbe, Bryan Habana, Carl Hayman, Drew Mitchell, Martin Castrogiovanni, Juan Smith and Ali Williams to your door, who would not want to watch these players in their pomp? And it is not as if Boudjellal has ignored his compatriots. There are plenty of Les Bleus in the mix, and the president has shelled out more than £10m of his own money along the way, so he can be forgiven for asking why clubs such as Toulon have to qualify for the Heineken Cup, while their Scottish and Italian counterparts are allowed automatic entry.
"I hope the different factions resolve their difference and we have a tournament with representatives from all Six Nations in 2014-15, but credit where it's due and Toulon have achieved an awful lot," said White. "They won the Heineken Cup, reached the final of their domestic cup and are at the top of the table again [though with three losses in nine matches]. So they are formidable. But Glasgow are unbeaten so far, have a terrific blend of youth and experience in their squad and they will want to make amends for a disappointing European campaign 12 months ago."
It promises to be a cracker. Boudjellal's autobiography was entitled Ma Mauvaise Reputation, which literally translates as "Bad Fame". That is how he runs his affairs, and Toulon aficionados love him for it. But if Glasgow perform to their full potential, they can trump the fame game with their own group of local heroes.