I mix and match. Most times I wrap. Other times I just have bag gloves or boxing gloves. Occasionally I go bare handed on the bag because I like to work palms, hammer fists etc and grabbing the bag as I hit. I bung some pre-emptove shots at the end of a session too. We spar bare knuckle in knockdown so you need to know what it's like hitting bare knuckled before hitting a person I think. There's no way I'd do a full Thai session on the bags and leather pads without wraps though.