I ride in the winter, I have tried an old Schwinn single speed, was ok till the snow is more than 2 inches, tried a 5 Speed old Schwinn, same thing not bad. I tried a mountain bike with 21 speeds, was not too impressed, thought it would be better.

I was watching this video of these fixed gear guys in Montreal, they all ride their fixies in the snow. They ride fast with no brakes (-: they skid with their wheels locked back and forth in the snow, looks like too much fun.

So yea this year I will try one of my fixies. What I have found is nothing is too good in the snow, but it is sure fun trying. I am also 61.