Never heard of them. I'm a member of the Armed Citizen's Legal Defense Network, though, and know that several people around here are too.
http://www.armedcitizensnetwork.org/You get 5-6 training DVD's when you join, some with Ayoob. He is on the board of the organization. I've got nothing but positive things to say about it, although admittedly I've never had to use them other than reading newsletters and watching the DVDs.