I have SPD pedals on my roadie and mountain shoes that only take SPD-type cleats. I'm thinking of clipless for my upcoming fixed build, and if i get SPD pedals then I don't need new shoes. It seems like the narrow platform of SPD would not be comfortable on a fixed since there is pressure on the foot all the way through the pedal stroke and a wider LOOK-style pedal would be more ideal. So, has anyone tried SPD on a fixed and what do you think of it?