I was underwhelmed.I agree. Fighting from the backis not ideal. It is very effective, but not ideal. I couldn't watch the whole video. What they are showing is nowhere near ideal, and nowhere near easily reproducible. It has its place.... If you are 007.
A hospital corpsman who 'got' some 'real Spec. Ops training'...If you have not seen the Dog Brothers you need to, if not just for the awe. Real deal knife and true fighting.