My "Winter Bike" is a Trek Soho-S.
Full fenders, knobby tires, etc.
I love the frame because it's more like a mountain bike. It's also aluminum so it's not subject to any of that "thawing" nonsense I hear about steel frames in the winter. It sounds kinda bogus to me.
But yeah, I love it. The gearing is pretty mellow, and I get through the snow and ice fairly.
Although I try to avoid the ice at all costs. does great though.