Hi Jarrod,
Seems like the general consensus is that Hockheim is the real deal. Got one of his knife-fighting books. Seems like he knows what he's talking about. In fact, last I checked, the folks at that 'other forum that shall not be named' :angel: seem to side with him.
Apparently too, the cops in Melbourne, Australia, tried to shut down one of his affiliated schools (training was too realistic or words to that effect) a while back, which actually lends credence to his methods.
Hope this helps
TCG
BTW: this is all mere opinion and heresay. Never trained with the guy although I'd like to.