I was at that game also yesterday (I'm shame faced at the Flyers, as a side note). I did not carry my gun, but I could and should have. "Security" wanded me on the front only from my naval to my jean zipper and I carry just behind my right hip IWB. Keep in mind that I had my 3" Benchmade folder clipped to my front right pocket and the thing didn't beep.

I've noticed that i've never actually seen those wands go off AT ALL at any Flyers game i've been to so I can only assume that they don't even work. I'm gunna carry at the next one I go to just to give it a test run