Running Windows h8 with a triple screen set-up is a nightmare...especially given where the Charms bar is located - it was a pain in the ass to turn the computer off since the mouse cursor would go on the other screen instead of opening the actual menu.
I hope other peripheral manufacturers follow suit, but that doesn't really matter that much to me since I'm a Logitech fan myself and I hope they use this feature on all their future mice. I'd love to have that functionality integrated.