Proper Brick Oven is a nice place, but it could easily get crowded as the space is pretty tight. There is a large bar with TV's so if you wanted to have a date night without missing an important game (*cough* a Steeler game), Proper Brick Oven would definitely bring that ambiance.
I'm not in love with the food. The pizza is good, but I'm just not personally in love. You do get a decent amount of food for your money so it's definitely worth the price.
I think I was most impressed with the staff. We went to Proper Brick Oven with a sizable group and they were able to split the check AND add the birthday boy's meal evenly to everyone's check. It's a small thing, but it makes celebrating a birthday or event that much more enjoyable.