I'm using my old Dahon Mu XL as a dedicated "winter" bike. This bike has a Nexus 8-speed hub. The frame has 12,500 miles on it. When it was my "normal" commuting bike, I would use a "red band" hub-equipped wheel in the summer , and a "standard" hub in the winter. The winter hub has about 9,000 miles on it. I ditched the rim brakes and installed a roller brake after I wore out my second rim. Here's the bike defrosting in the Men's room at work.
Steve
EDIT: Studded tires, of course. [MENTION=388062]kingston[/MENTION]: I commute from Mundelein to UIC by this bike and METRA. I bought my spare Nexus wheel from one of the mechanics at Kiddles. Small world!
EDIT2: Roller brake on rear only.