Not technically judo, but I've read about Peter Ralston, the founder of this Cheng Hsin school. He's got a background in judo and chinese arts and allegedly won shuai jiao tournaments. He then founded his own style and is pretty big on relaxation and proper body movement. I need your expert eyes on this: is there anything special about the drills below? Some smoothness/effortlessness/good body mechanics? Something that goes beyond compliant partners? Do you see value in it? Thanks for the info.