I always play barefooted. I do adjustments with my toes also!
You guys are crazy-bones! I have a devil of a time stepping on 3PDT switches with bare feet. Switching a boss pedal with bare feet is a cinch, but when I try to switch my trem pedal with bare feet, the switch tends to work its way between my toes and nothing happens. And whenever I try to step on two switches at once (like when I stomp the Delay On and Inf Repeat switches on my delay to get stutters), I can never get the timing right without shoes. Play on monkey bass-players!
I use the term "monkey bass-players" with the utmost respect, btw.