I've been wondering about it, as I'm quite sure that many will still like to play the game with a controller (even just for a matter of habit), and the PS3 UI seems perfect for that, even on PC.

So my question is simple. Will PC users be able to switch between the two interfaces at will depending on what control system they prefer?

I honestly feel it'd be a waste not to have the PS3 UI available on PC as well, for those using a controller.