Hi Keldon had my first game with it yesterday (Halo Mill) and was a little concerned about the buttons on the sight(left side) taking up too much sight picture but had no problems and really enjoyed it I've the crossfire on my main CQB weapon and between the two like the stikefire more although adjusting the brightness with gloves is a bit of a pain PITA compared to the dial on the crossfire.
hope that helps