I let the 2 horses I don't ride go bare foot year round and the one I do ride barefoot December till late April he is tender footed for awhile but eventually gets over it this helps me and him in the winter when the snow and ice come
My horses are all barefooted. But this makes sense, because when we were kids, we all went without shoes. As we start wearing shoes, our feet became tender. Now, when I walk on gravel without shoes...its ouch, ouch!!