Well, it seems like there's one or two trainers at that place that actually know what they're doing, the rest are bitches.
But even at the boxing gym I go to, the classes are for the pansies and the women and it's all cardio shit, but if you actually want to box, you go to the head trainer and he tells you "don't take the classes, they're garbage" and then you work out with him and he takes you through.
So I say check it out anyway, just make sure you go to the gym that has this David Gamble guy. He seems to be the only real fighter there. The rest are certified in some bullshit but not actually real.