I have one, bought it to replace my G9x. Good size, comfortable, good precision (better than g9x at least). I recommend it for FPS.
Anything specific you want to know?
Took delivery of one last month to replace my Logitech Performance MX. It is extremely good employing a new logitech sensor. Definitely better than my old mouse and my previous favourite - MX518.
It is fine for claw grip I find. My only real issue with the mouse is the mouse wheel, which is untextured and can be 'slippery' at times.