First off, curse you IdiotFool! I can't get anything done because I can't stop playing with with the Creator! And now I'm spending a bunch of dough on figs to re-paint!
I think the armor should be available to all, just to be able to play with them. Maybe just put a disclaimer that says Beast Man/Stratos arm armor will not fit on non-furry arms (without customization). MAA's arm armor fits, but not that well. Then again, some figures arm sockets are a bit bigger than others, so it may be a slippery slope.