But, can you play some arpeggios patterns (pick them with pick of course), let´s say 16-notes at 140 bpm for about 30 sec whitout feeling any tension in your right arm?

PS. Have you tryed Bucketheads Big Sour Moon. Man that´s hard and it´s a killer for my pickin´ hand but than again all I need is a little rest for about 30 sec to play the song all over again. But funny thing is that I can shred like Flight Of A Bumblebee at 250 bpm (all 16-notes), and feel much less tired (almost not at all) than playn´ some 16-notes arpegios at 140 Bpm.

But if I would change my pick technique and start pickin´ from my wrist, how hard is it and how long time would it take. Also, would I gain same speed as I have now. You guys who done this transformation, can you describe it a little.