in this lesson Andy himself explains that sometimes he prefers to start a picking pattern or exercise using an upstroke, he proceeds to play some 2 notes per string pentatonic patterns.
I believe he has a pronated position for his right hand and his foearm is palced on top of the guitar body like a typical upward pickslanter player, resting the ulnar and radial side on the instrument.
I remember some years ago in the Lick library days when he was one of the very few who had some intructional material being able to play John Petrucci’s stuff at the same tempos. So ever since then he has been under my radar, altough his techinque I believe is petty different from Petrucci’s.
Anyway that does not demerit his incredible palying and the fact he has developed petty cool ideas and music of his own. I am just a fan of his chops and music and believe having him on Cracking the Code would be so exciting.
Also I am righ now trying to copy that uwps position and see how it works, I always though that was not the best way to pick across the stings fast but after getting into CtC it proved I was wrong.