Waaaaaaay Back in the early '60's (hippy days) I used to play all the time in bare feet. I loved it. There was something about it that made me more energetic and quick. During long sessions back then, I would take a break and wash my face, hands and put my foot (one at a time) into the toilet and flush. It was very refreshing and I could play for hours that way.
Way later in life, I told Louie about this because he sometimes would be playing for days on end. After a couple of days (in the same shoes and socks), there could be an odor. He liked the idea so much that he started doing it even when only playing for 6 or 8 hours.
Now I just wear NB walking shoes - and not for long.
TY & GL