Nice to see xbox.com is back up again. I want to buy this DLC for sure today but want to make sure there are not any day 1 bugs. So I will keep an eye on the forums and hopefully no major issues appear. Bethesda is known for their day 1 bugs in DLC.
I havent had any issues so far, but I admit I havent done very much. I finally got a Hard Drive so I started working on Dawnguard again As soon as I exited out of the dungeon I was in, I was approached by a carrier giving me the quests for the house and adoption, so I got the quests pretty quickly. Haven't started them yet though.
But I think you're good. If you're going to get the DLC, it doesn't matter if you get it now or wait for a possible patch. If you get it now and if you happen to run into a bug, you're just going to have to wait anyways. Might as well get it, because the chances of running into any game breaking bugs are low...sure Bethesda are known for pretty bad bugs, but they are not as widespread as people make them out to be, especially with Skyrim...the only bugs were simple bugs like Dragons flying backwards. Nothing even close to game breaking, unless you're a PS3 user.