My wife and I ate a Joey's on 10/15/11 and we were pretty disappointed.
My wife had a turkey sandwich, which she said was very dry and overall bland.
I had the Italian beef sandwich wet style, which there menu board stated was their specialty. While the sandwich was very big, the bread had turned into a undercooked doughy consistency from the gravy. The hot peppers where dull, and the sandwich on the whole need salt.
I will say the prices and service were pretty good, though the place was pretty empty.
I'm not an expert on Chicago style food, but I would say keep driving and go to Chicago Hamburger Company or Luke's of Chicago.