Who is great with 50/50 guard with GI?

Love it or Hate it, its a guard that is being used extensivly with the gi. Who in your opinion is good with this guard (besides Mendes Bros and Ryan Hall)??

Off the top of my head, the Mendes Brothers, Ryan Hall, Kenaan, the Miyao's

'Marcus Buchecha, Rodrigo Cavaca, Antonio Cara de Sapato, Rafael Mendes, Augusto Tanquinho, Ryan Hall, JT Torres, Keenan Cornelius, Dean Lister, Rubens Cobrinha'

http://www.youtube.com/watch?v=fdHOgMcG0cU

Caio Phone Post 3.0

Check out Gustavo Campos.

Dude obviously specialises in the position. I think I saw him transition from X-guard or something to the 50/50 one time. Hear that? HE PREFERS 50/50 TO X-GUARD! I know, right?