Rolling Elbow's right, you will at least need to familiarize yourself with taijutsu basics, but I know that you are seriously into Judo. I think you might be surprised how much Judo is like taijutsu, after all, they're both just jujutsu when you get down to it. Think of it as Judo with a heavy emphasis on the Tenshin Shinryo atemi stuff. I'm not out recruiting for the Genbukan, but Tanemura sensei does have a system called Goshin-jutsu (self defense techniques). It focuses on the easiest and most effective techniques from jujutsu, ninpo, and Chinese MA, and it's popular with cops, security people, etc. Good Luck!
Jujutsu, Ninpo, Chugoku Kenpo