In all sorts of videos you can see him shredding it up, four finger per fret style. However, he has a pretty low strap for doing that. And to even slap the way he does, I have to jack up the strap height. How on Earth does he manage to not have carpal tunnel? However he does it, I'd sure love to know, considering I play in bands that encourage lower height, and I stick to classical fretting. Check it out. It's hard to see, but he has it VERY low in this next video. This song is hard enough to play while sitting.