Yea he challenged my gym before, he is a really good player, and his special rules are interesting. He is reliable too. S right now 9 out of 10 gyms are active.
Just thought I'd let you know that the normal gym has been reinstated under Bakuzen so you are still at 7 badges, but for now Oli's gym has been disbanded, so you just have anime, RAcast, and doomking left to take down.
It should be interesting to see how they all fair, I've only ever seen one of them battle. BTW, do you any spare Ice Beam, Earthquake, Rest, and Sleep Talk TM's???