Not sure how well this would work as most people wouldn't have use for the buttons on the mouse since most use a game pad keyboard (Nostromo N52, Logitech G13, or an Ideazon Fang). Using a game pad keyboard gives you the ability to setup your WASD with weapon buttons (1 - 0 - +) Shift, Ctrl, Alt, and a variety of other keys.
If Razer has done this years ago before the game pad keyboards came out from Nostromo and Ideazon, they may have had something, but not, most people aren't going to have much use for this mouse if they already have a game pad keyboard.