Gears looked fine. I don't necessarily like the feeling the demo gave that your squad-mates are leading by the hand, though. "Oh, look, if you do THIS and then THAT, we can get over THERE!" Yeah, well, why don't you go do that while I shoot things in the face, then? Other than that, I liked what I saw and the environment looks great. It should be a well-made game.
The Scalebound demo, on the other hand, did absolutely nothing for me. It seriously made me lose interest, at least for now.