I have been to quite a few of the Knodel shows there. not too bad. OC is fine, just have it unloaded, holstered and the mag out when you approach the door. They do NOT have a clearing barrel like the WAC shows do. They will zip tie your pistol for you, re-holster and shop!
The shows themselves are pretty good. Smaller than WAC, but still decent... Try and find a guy there with a handlebar mustache and a cowboy hat (end cap table, probably off to your right when you come in). His name is Dave and is a nice guy. He's got quite a bit of handguns for sale / trade.