I think the UFC should have guy fighters use rashguards. I think it would be financially beneficial to the fighters as it would give them sponsorship space. It would put an end to the slippery grease factor. And they wouldn't need to do that ridiculous struggle to put on a t-shirt with sponsors prior to the decision announcement.
Where would most UGers get their secret source of BEEP? 
Why would they do that but outlaw aokis fancy pants. 