Well I've tested him, perhaps not utterly and thoroughly, but I think I've seen enough to say that it's atleast fair to let him show his skills to MBK.
MENTOS has impressed me with his understanding of the game, which is well developed for someone who's only been fully registered for little above a month. The only thing I missed really, was his seemingly lack of desire to use his arms as offensive weapons.
He also seems very okay as a person, and in overall, I'd say he's good a candidate for CBK.