Interesting that this thread was brought back from the dead. Over the past 6 months I've been squatting and deadlifting barefoot. I asked my dad (a physician) whether it's an issue and he said it wasn't but he did specify that if you put enough weight on your feet, arch support might be an issue. The problem is, he didn't really specify what 'enough weight' was as the conversation was short.
I guess my question is this:
I'm squatting 460 lately (my dead is 25 more), should I be worried about my arches at all? I suppose I can go out and pick up a flat soled shoe or wear my sketchers or something, but I really prefer barefoot. Anybody know?