To answer your PLO question - they rarely have a 5-5-10 game going, but there was one about 2 weeks ago. Ended in someone threatening to throw a chair. I was playing the 1-2-5 game after a tournament, its the same 8-12 players who want to gamble. If you have PLO experience, you will be ahead of 9 of those people.
I played there 5 days a week the past 2 months (that or Derby). Once you become recognized as a reg, the game goes downhill. Just not enough transient people, but the level of play is fairly low level (I still level myself there).
They were probably suspicious of the 1200 purchase because they have no games that run that high on any regular basis, bringing out black chips is like a big thing there.
I have gotten to know the floor, TDs, and dealers and they are genuinely nice people. If you want a laidback 2/5 game, go there. Everyone buys in for 2-400 and it plays like a deeper 1-3 to be honest.