This is a great post for me as well, But no one has answered really about Flat Footed People, I have been using regular nike air crap stuff (feel like clouds) but tonight was my first night doing it barefoot and it was a whole different world. I got some looks in the gym but it was worth it and F them anyways.. but I was experiencing knee pain probably from trying to go too heavy too early since I've just started squatting, but tonight was really actually very little pain in fact none at all I can really recall.. I think I may go pick up a pair of Chuck's but I'm gonna keep barefoot in mind as well.. I dig it! But if anyone knows about pediatry I'd like to hear about ur input on footwear for squating with a flat foot..