Leinster, who visit Scotstoun on Saturday in the first round of Guinness PRO12 fixtures, will pose a much more serious threat than London Scottish, but the Warriors head coach drew plenty of positives from yesterday's game as his side came out on the right side of a six-three try count.
What must worry him a little is that as the replacements started to flood on to the field, the control went and London Scottish won the second half 19-14, scoring all three of their tries then.
"We weren't as accurate in the first half as we should have been," Townsend said. "We weren't as fluent as we would have liked to have been, so there are things to work on. London Scottish played really well and got more and more confident. There were a lot of set-pieces in the game so it didn't really flow. They gave us a real competitive, physical contest.
"Letting in three tries is obviously not something we are pleased about - conceding any tries means something has gone wrong - so that was disappointing too."
Despite a few struggles with continuity, Glasgow seemed to have taken an iron grip on the game when centre Mark Bennett, later named as the sponsor's man of the match, created an early try for full-back Peter Murchie and then scored two of his own.
Touchdown number four, Lee Jones completing a break from the young No 8 Adam Ashe, added a further gloss to the score.
However, a stop-start second half allowed London Scottish back into it with Lee Miller, the former Gala player, grabbing a score before fly-half Dan Newton added a second and then set up a third for wing Mike Doneghan.
Prop Jerry Yanuyanutawa and Murchie, finishing a 90-yard move, replied for Glasgow.