I've eaten here several times over the past several years with both large and small parties and while it's a fun place to eat thanks to the novelty of eating in a church, the experience is dampened by the ho-hum food and average beer.
Everything I've eaten here (including salads, sandwiches, and pierogi appetizers) has been okay, never above average. The pizzas are pretty mediocre compared to what you can get elsewhere around Pittsburgh.
Overall, it might be worth a visit just for the fun of eating somewhere different, but I probably wouldn't recommend it if you are looking for great food.