That said, depending (heavily) on how you want to define it, yes, I would call IP/IS/Aiki "Asian Mysticism". But since we haven't specifically defined that right now, it's hard to say if I feel it is that or not. People define these things incredibly differently, and without knowing more, I really can't say.
a bit off topic, but the funny thing is that i, an asian, got hand-on instruction of IP/aiki from a couple of american white boy gringo. ok, one of them is a jew, but his aiki-jewjutsu is pretty good.