A fellow fixed gearer, whose opinion I respect, advised me to keep the skinny tires on my bike through winter (this will be my first one here). But everything else I've read (icebike.com) or heard highly recommended knobbies. What would be the justification for using road tires throughout the winter (it snows a lot in Milwaukee)? Cut through the snow?

And if there's a consensus that winter riding should not be done without studded tires, what options would you have for someone whose only means of transportation is a track bike, which difinitely will not fit ice tires?