Quite simply, excellent. Love his footwork too, and the odd little giggle punctuate some of his more punishing end-moves. Little digs and pinches everywhere. Hatsumi is awesome. His analogy of marriage and affairs vs fighting in the ring and against multiple attackers is also ace.
Watch, for example, 35.00 to 37.00. Really simple way to break grips. Beautifully explained. Hilariously ouchy move on the opponents at the end!