The place with the rocks is Fontainebleau which is one of the most famous bouldering spots in the world considered by some the birthplace of bouldering which just happens to be about 20 minutes from lisses something in the water in that region or something?
As far the martial art, the hand sparring looked like Wing Chun to me but I am not sure I remember reading that David got a black belt in something during his time in india. Stephane mentioned training in a type of vietnamese kung fu as well. That is stephane in the video with him by the way.
Definitely a cool video.