Aiki weapons but not Iwama (I mistakenly thought aikiken=Iwama) ??
http://www.youtube.com/watch?v=yfGJpRwQWos&fmt=18
Primary influences are said to be via Inaba as well (I'm not too well informed about this so ...)
W'hacky sticks'? Many are confounded by Yamaguchi shihans aikido/aiki.