I've just been learning the more glitzy side to bellydancing for the past year and a half (I still consider myself a beginner, although Im in the advanced class!!) and my instructor thought it would be a good idea to teach us some tribal for 8 weeks. We're doing a show in March 2009, and my instructor likes the idea of a story in a show, so we're making a little story out of it, and we wanted to bring some tribal into it for a bit of a change in dance style.
Im enjoying it so so much! I said in another thread the reasons why I like the more glitzy side, and why I like the tribal side -- for different reasons.
I like the tribal because it helps me with my moves, accentuates them, its a little easier broken down.