I have been to Philly. I've had the real deal with the wiz and everything.
Inside this joint they have all sorts of Philly sports themed jerseys and such. I thought that was a cute touch - even though I am not a sports fanatic.
We ordered two of the small $5 steak sandwiches- one with the wiz and one with provolone. I will say that for $5 I would almost rather have a subway footlong. The sandwich isn't really worth that price - it's quite small.
Wiz - When I had the sandwich is Philly with the wiz, it was awesome. Very tasty. This one was quite salty. It took away from the sandwich. I don't recommend this wiz.
Provolone - Awesome. Probably the best steak sandwich I've had in Vegas, and I've been everywhere (Pops, Capriottis, Hougans, etc). The meat is tender and juicy. The onions and peppers have a bite to them. Perfecto!
Staff was polite, and they got me my food pretty quickly. I would definitely come back to this place - just on a special occasion because of the price.