The above issue was more than just that; the controllers of this design are well known to just disconnect. It's odd because it's an issue common to this model of controller. I have one and never had it do this to me, but I also rarely use it. If you have a (black) play and charge kit you could just use that to prevent the potential issue (I think).
There were also people who talked about the right trigger and/or right bumper just not working after a few weeks of play. That's a big issue, especially for a game like Gears of War.
It looks and feels nice, but just be aware that it could have issues.