Well if you headed off to Montreal it’s going to be very cold. It’s typically -5 C highs and -13 C so you really need a warm coat. Particularly when the cold winds move in.
It’s hard to find the right size on REI for instance but Zappos does have them.
But of course what I really want is a Feathered Friends full “go to Everest jacket” called the Khumba down jacket made in Seattle no less.