I commute in casual shoes which don't constrict blood flow as much so if it's really cold I can usually get away with wearing an extra pair of socks. My fingers are another story though, I can't stand having icicles for fingers. I've been looking at those cheap USB powered heating gloves trying to figure out some way to power them off a battery pack of sorts but I know nothing about electronics so as of yet no results.
Edit: bit of a thread hijack I'm sorry but you basically got your answer in the first reply. Wet, cold and salt will destroy the paint but won't affect the structure.
I commute in casual shoes which don't constrict blood flow as much so if it's really cold I can usually get away with wearing an extra pair of socks. My fingers are another story though, I can't stand having icicles for fingers. I've been looking at those cheap USB powered heating gloves trying to figure out some way to power them off a battery pack of sorts but I know nothing about electronics so as of yet no results.
Edit: bit of a thread hijack I'm sorry but you basically got your answer in the first reply. Wet, cold and salt will destroy the paint but won't affect the structure.