I am pretty flexible. I wear house shoes, slippers or slipper socks when sewing. I don't sew barefoot simply because I already have something on my feet by the time I get to the sewing room. I now have diabetes and the doctor has been very stern in his insistence that I wear something with a sole. I hate slippers, they make my feet too hot, so am making my own (and yes, found out where I can get sole fabric!).