original name :]
It's interesting (to me anyway) that he uses an open hand technique on the crimps. If you look at most strong boulderers they wrap the thumb around on crimps. I wonder is this a common difference between boulderers and trad climbers who boulder?
Well spotted. I don't think it's to do with his background. Dave strikes me as pretty astute and if it helped he would do it. Some people just aren't crimpers. Much more injury prone grip.