Looking for some advice for a commuting tire for my Mukluk 3. I bought it to ride dirt roads in the snow this winter, which it did well at. Since then I've decided to mount a rack to it and use it as my summer commuter. My commute is around 7 miles and consists of mostly paved shoulders, some dirt shoulders and an occasional dirt railroad service road. So far I've just been riding the stock tires (Larry front, Endomorph rear). Here's the question: should I just stick with the stock tires and if they're worn considerably by next winter, replace them with a Husker Du for the snowy riding, or should I replace them now with the Black Floyd for the nice weather commutes and save the Larry/Endomorph for winter?