I visited Grant Central and asked for cheese-less pizza. I was a bit disgusted when the person taking my order said that they would "just be scraping the cheese off". It's understandable, and I'm glad that she told me they would be man handling my food. Don't visit as a vegan unless you're prepared to purchase a whole pie. They don't seem to have any vegan salad dressings and there are definitely no vegan sandwiches. I ended up having a soda while watching my vegetarian friend nibble a slice that he said was pretty good.
Cons: not vegan-friendly, kind of smelly