I've gotten take-out from XO a couple of times now. Green Curry with Flank Steak: very good! Pad Thai with Chicken: bad. I mean, not disgustingly bad (I ate all of it), but dry and pretty tasteless. I haven't tried any of the Chinese dishes yet, but for Thai food, I think I'll keep driving to 28th Street unless I'm really crunched for time.
Speaking of time -- and I HATE to add my voice to the chorus of folks usually complaining about this -- finding a parking spot at night on Monroe Center is a pain! I'll walk 10 or 15 blocks from a parking spot if I'm going to sit down and enjoy a meal downtown, but I think it's reasonable to expect some monitored free or even metered parking within a block of a restaurant that offers take-out. The city needs to start enforcing meters on Monroe Center 24 hours a day. Including some 10 minute parking only spots wouldn't be a bad idea either. If you want to get in and out of XO, Jimmy John's, Morado (the sushi place), Cafe Solace, etc., you're going to spend way too much time looking for a parking spot for take-out at any of these places to be convenient.