I've been there twice now, once for dinner and once for lunch. Both times my meal was FANTSTIC. I had the Ham shank for dinner and it practically melted in my mouth. Then the complimentary tater tots and cornbread were also very good, and a nice surprise. The lunch Mac & Cheese is amazing.
Service at dinner was very slow, but we planned on a laid back evening out, so we didn't mind it too much. The lunch speed was normal for downtown, but you don't get any of the extras at lunch like you do at dinner. I haven't gotten to sit on the patio yet, but am looking forward to spending an evening out there sometime. Based on my experiences and others, I'd say don't plan on this being a quick meal.
Bottom line: if you like trying new and interesting foods definitely check it out. There's nothing "normal" about their menu, which is probably the best part of going there. Have an open mind and time to kill and you'll leave satisfied. :)