Wow, I love it... Everything but the coloring and text are perfect... It's way too monotone, but it looks awesome nonetheless.
So far what I've seen of you, it was all good. You're an excellent designer. This one is also top of the notch.
This one looks great. I prefer you kept the gears of war colors though. They would look GREAT in this sig. ps. GOW is teh best game everr.