I think Sensei Sells is a good karate-ka with some Shorinji Ryu leanings. From what I've seen his brand of karate has both Okinawan and Japanese influences. He is no doubt a scholar of toudi jutsu and gendai budo. He is friends with my Sensei and other very accomplished Okinawan Karate Sensei.
His Crane is from Anthony Sandoval and Ron Lindsey. It has a little of that new karate feel to it though, something he injected. I think that he is definitely in the top echelon of karate guys out there, Japanese, Okinawan or Korean.
Hope this helps.