I think I did post this a while ago, but it was probably the out-of-sync one...
He uses overlays AFAIK, acrylic / silk extensions to aid with the picking.
Edit to add:
Yup, 22 Feb last year - and no responses. Seems I was ahead of my time... tsk tsk tsk.
Either that or the syncing really pi$$ed a lot of people off.
http://www.guitarforum.co.za/youtube-guitar-videos/john-butler-trio-ocean/