Zorba, I hold you in the highest respect, but I have to say that Steven and Rachel are Tribal fusion dancers, not Tribal dancers. They dance to very different music, use different moves and different costuming.
To me, it is the same distinctions one can draw between Egyptian and American Cabaret. Or, Egyptian and any type of Fusion.
(FWIW, it's taking me a little courage to say this, because of my respect for you and because I am only a new student to both Tribal and Tribal fusion styles.)