Join Date: Jul 2008
Location: Grid Reference, SK
Bikes: I never learned to ride a bike. It is my deepest shame.
I would not buy a new bike for winter use. In the winter the roads are covered with salty slush, and the salt gets everywhere and ruins the bike. The best thing to get is an old rigid mountain bike or '10-speed' road bike, put on mud guards or fenders, and narrow knobby or studded tires.
Singlespeeds are fine if you don't have any hills to climb, and gear mechanisms can get gunked up and stop working in some conditions.
Of the two bikes you linked, I really liked the Garneau. I think the disc brakes make it a better winter bike.
Get a set of full-wrap fenders for it. You can probably get some that match the bike nicely.