I started "playing" the beta with a Surface pro this week-end, and the touch interface makes it really, really more convenient : the stylus is great for sculpting and painting, and moving the camera with two fingers is really comfortable (especially compared to the awkward WASD/QE using the keyboard).
It seems that the menus in general were designed for touch interface first. I wonder how the experience will be on consoles, but I hope the editor will support smart glass (I should watch the reveal video again, I think they were swapping between console, PC and kinect, but I'm not so sure any more).