Came here a lot as a student and it was a solid meal. They put a lot of meat, fries, and cole slaw into the sandwich. It's definitely not anything mindblowing, or especially innovative but it's uniquely Pittsburgh and it's got all the carbs and meat you need if you're hungry/hungover/drunk.
You can also pay a bit more for double meat or an egg and you can ask for onions for free. Getting an egg on the sandwich is fantastic. You can also ask them to remove the cole slaw or the fries or have them on the side instead if that's not your thing.
This place is pretty close to both CMU and Pitt and there's a ton of bars and other restaurants in the area too so it's nicely situated and a ton of students end up going here. They also have beers on tap and it gets really dive-y on weekend evenings.
I would recommend trying the sandwiches starting with pastrami, kielbasa, or knockwurst. The non-sandwich items aren't great and I'd probably pass on all of those.
Definitely a place to check out if you're in Pittsburgh.