I actually didn't miss a workday commute on regular mountain bike studded tires last winter. Some rides were slow, but far faster than trying to drive.

Although I like the idea of floating the bike up in deep snow, replacing wheels with skiis is a non-starter. There's always bare pavement, and lots of it, even during snowstorms in the city. And of course I have to ride the same equipment home after eight hours of plowing and salting.

I'd go with a pugsly if I was going to put money towards deep-snow mobility. Maybe if someone wins a major winter cycling event on a ski-and-track bike, I'll take another look.