I just rode back from downtown and it was snowy as hell, sliding and skidding all over the place, nearly got run over like a bazillion times and all in all it was totally awesome. Cars are only going 5-10 mph anyway and as long as you ride smooth and stay upright you're pretty golden. One thing though is I totally gave up on trying to stay clipped in. Glad I got the flip-flop pedals. Every day this week I've ridden to work and every day I've shown up sweating and feeling like I wore too much. Windproofing and a balaclava are a must for me, after that it's all gravy.