I've seen a few guys on the live scene recently doing this thing when they hold the kneck of the guitar with the right hand near the tuning pegs and do lots of hammer-ons and stuff with the left. Think it was Joe Satriani I saw doing this on a video a while ago so was just wondering is there any purpose to them holding on with the right hand like that or is it just posing to make it look like you're doing something impressive when you're not really.