I use a ribbon style of handwrapping to give me some extra cushioning for my knuckles. I then wrap in between the fingers to keep the wraps that go over my knuckles from moving around and scuffing my knuckles. Take a look at the 'useful/important posts' a topic that has a link that goes over this style of hand wrapping. You would need the longer handwraps to do this. There's no need in toughening up your skin on your knuckles.