Here is some footage from Norton Dojo in Sheffield in the UK. They are practicing traditional Gojuryu, and have some interesting and useful approaches to group training. Additionally, there are clear demonstrations of how to practice randori, the semi-full-contact sparring required for black-belt grading. Finally, there are many applications from kata which are introduced during free sparing and yakusoku ippon kumite, as well as some sound overall advice. There is only one "Gojuryu," but many ways to practice, and we can all learn beneficial things from each other's training methods and philosophies.