hmmm drexl, everyone so far seems to indicate otherwise insofar as warmthness goes for the jacket. I may be biased because I had worn the jacket without its sleeves, and for me, anything less than an actual overcoat I find to be insufficient for harsh Canadian weather.
I've been in Montreal twice during the winter and I remember it to be VERY cold, freezing even when packed on with layers of clothing, but perhaps it has to do with me feeling cold easily? Who knows. That is not to say it is not a warm jacket, but I felt that on its own, it was only very sufficient for a HK winter which is much similar to Vancouver winters (only without snow) and with only one slightly thick layer underneath (like i said, I wore a cashmere turtleneck underneath). It is certainly a beautiful jacket, and if you find a good deal, do not hesitate to purchase it, but I would imagine if worn in Montreal's wintertime, you should think about packing on the layers and perhaps even throw on a scarf, because I still don't think it to be sufficient for harsh Canadian winter when worn on it's own.
-Cheers