I'm looking to pick up a pair of Zoot Ultra Races and was wondering about sizing.. I have tried on a pair at an expo, really liked them, but completely forgot what size I tired on. I wear a 10.5 in nike and a 11 in Asics (DS 12's). Mind you, I will not be wearing socks with these bad boys. I was thinking 10. Anyone have any suggestions for me as far as sizing goes? Apprciate the help..