Honestly Tim, I think this show has fizzled out quite a bit. I find that the Chicago area shows have quite a bit more going on. I've been wanting to get to this one, so if I make it I'll have to look around for you.
At the smaller show in Indy just a couple months ago, there were a few leo vendors, but the only 'large' one was Aubrey's Reptiles, I'm sure he'll probably be back for this show.
There were a ton of beardies and corn snakes and quite a few dart frogs... but the leo population was on the low side.