and I'm not even sure how Lenn would solve the problem of casting stencil shadows from boned animated meshes since Blitz doesn't return the modified vertex locations.
Thats the thing, im using your trick is all i can say. You'll see either when its done or when i give up (cos of lack of time) and tell the idea to someone else to make it.
And as far as I've seen the guys fixed it so that stencil shadows work on all cards without glitches.