Wally Jay -- I don't know about this guy. His "Small Cirlce JuJutsu" book is complete garbage, but I've heard from some reputable sources that the guy is the real deal.
The Chi sucking thing had me rolling. Has anyone ever been hit while inhaling sharply? You get the wind knocked out of you. It's not fun. It is teh d3adly, however, just not deadly to your attacker.