buying the PA3 for the chord looper ? Yes, maybe if I were crazy....
Actually, it's not so crazy - with all the new articulation options, it's great to free up your left hand for alternate controllers while playing over a chord pattern created on the fly. Like Don Mason said ... try "Sleepwalk" without it ... you can't work the bend right.
Everyone, and everything I listen to is my teacher. Every instrument, every voice, every sound in nature ... they are all my private tutor ... 24/7 for free.