Well since it is not a REQUIRED addition I really don't see a problem. Personally I don't feel the need to talk to my television/Playstation but that is me. And as usual I am not to keen on how it will XBOX OFF... *5 minutes later* Okay so much for voice commands doing that stuff.
But lets just say that I want to XBOX OFF .. hehe you can't catch me a second time. It isn't required and hell if half of it works it might be something for a few people. As long as they don't REQUIRE it, as ordering a pizza through kinect. Okay that isn't required but that just shows how stupid it is to make something simple take 10 times longer.
So yeah no troubles, no hair on my neck, stick with buttons and I am happy.