Fullpatate:
If your license has "Language proficiency: English" on it, don't worry.
IF it does not, then you might have some troubles. Being in the Montreal area you might consider doing some IFR XC to the Ontario side just to see the difference in comms there. And don't despair, there are plenty of 'funny dialects' on the air, just try Newfoundland, or Southwestern Ontario (Full of chinese and indian dialects...)
Just do procedures in english and you should fare well.
Cheers
H.
Helicopter IFR instructor