I haven't used the g600, but Creative used to make something similar - the Fatal1ty Gaming Mouse. The biggest problem with those was the faulty microswitches, which made them basically unusable, but they had the same layout as the g600 with the right mouse button in the middle. Using those in Windows the answer was no, there was no way to remap the primary buttons aside from swapping right and left (for lefties). I say this baring any special utilities which may have added that functionality, and I was only using Windows at the time (using Linux now) so, you know, maybe. With the g600 though, the right button is a shift key. That's not necessarily remappable or even visible to the OS. I don't know how that's set up, maybe someone else could weigh in on that.
Also, there's no wireless version for the g600. Though it's a gaming mouse so the DPI is good.