MMA Butterfly Guard?

Why don't we see more MMA fighters use the butterfly guard to sweep their opponents? Depending on the grip you choose, it is a fairly safe sweep when stricking.

mo smith used it alot

bustamante, brennen, terrell, diaz use it!

sweet them?

hehe.....that sounds gay

When did you see diaz use the butterfly guard?

Serra

Shaolin uses it very effectively.

I do