Hi,
I can confirm that one of the busted MPs was the one at the basement of a seemly-renewed corner building facing a Desjardins branch, on the 2500-3000 of Jean-Talon.
I was driving to a MP on the area of Jean Talon and St Hubert when I saw 3 Police cars parked at that corner and people coming in and out of that basement.
As far as I remember, that place offered services right away, without any "foreplay" of massage and such (at least, my only experience there), kind of "wham-bang-thank-you-maam". Too direct, too much exposed for North American standards.
It seems that it's safer to play in more discreet venues that take no risk of hiring minors.
Cheers,
G