Welcome to the community! 
As far as pro MMA fighters go, Brandon "The Truth" Vera in the UFC, and Gina Carano in Strikeforce use the TRX. Supposedly GSP and Forrest Griffin has in the UFC, but not positive.
I myself have started training in Muay Thai, and anticipate BJJ classes soon, once I get a little extra money which should be coming soon. 
So you train in BJJ I assume?