While Witcher 2 has always had (really good) support for the 360 controller, the Enhanced Edition's revised 360 controls currently have not make it to the PC Enhanced Edition. Kotaku:

Weirdly, the 360's enhanced controller setup doesn't make its way over to the PC version of the Enhanced Edition, which bummed me out. I'm one of the odd ones who played The Witcher 2 with a controller on PC, and I find that I prefer the 360's button layout and targeting system, which feel a touch different (and are arranged differently) on the PC.

While Witcher 2 has always had (really good) support for the 360 controller, the Enhanced Edition's revised 360 controls currently have not made it to the PC Enhanced Edition. Kotaku:

Weirdly, the 360's enhanced controller setup doesn't make its way over to the PC version of the Enhanced Edition, which bummed me out. I'm one of the odd ones who played The Witcher 2 with a controller on PC, and I find that I prefer the 360's button layout and targeting system, which feel a touch different (and are arranged differently) on the PC.