I agree with the above posts. As far as the differences between a TKD instructor and a JJ instructor go...a good teacher is a good teadher regardless of the style. And....as in any style...a Black Belt does not make you an instructor. Take the time to watch or take a few classes before committing. The style of teaching will be very different than a typical traditional TKD school so it may be hard to judge unless you are actually in the class. In my experience there is much less structure...more self-discovery from the get go. It may be a good sign that uniforms are not required at first because you must build a good base of falling, rolling,etc., to avoid injury. Keep us update on you decision.