I've visited a number of Primanti Brothers locations and am a fan of their food. The service at this location, however, was awful. When we walked in the manager attempted to seat us even though there was a perfectly capable hostess standing right there. He took us into the dining area, asked us to wait in an awkward location and then disappeared. He never wrote our name or party number down at the hostess station or even bothered to tell her that we would need seated. We waited there for about 20 minutes, and a few other parties who seemed to have just walked in were seated ahead of us. At one point the manager even walked up to us again and asked if we needed a table. I honestly believe that in his mind this was the first time he had ever interacted with us.
After grabbing the hostess and explaining the situation, we were seated pretty quickly. Sadly that was not the end of our troubles. Our waiter was very obnoxious and more interested in hearing himself talk than actually listening to anyone. I got the impression that he was trying to imitate a tough-guy New York deli owner you might see on TV. A number of people asked for their coleslaw on the side because, frankly, it's gross. Each time he challenged the person, claiming that they must not have eaten here before and that we didn't know what we were doing and that "that's just how we do it here in Pittsburgh" (Just for the record we were all born and raised in Pittsburgh and have eaten at Primanti Brothers countless times). I think he thought he was being charming like those beloved caricatures he was clearly imitating from TV, but it was really just annoying.
I like Primantis a lot, and it was nice to visit the original location, but I think that status of "first" may have gone to their head. I would definitely recumbent that you visit a different location. Additionally, the other locations I've visited have wider beer and mixed drinks selection and more items on the menu, so that's a plus.