Just installed it on my wife's computer. (I couldn't do it on mine...fear it would crash it) Anyway it is really odd on a notebook without touchscreen. I'm not sure I see the benefit yet.
The apps that I have tried are great but navigating with a mouse on a lot of them is just a real pain. I did a dual boot so that Windows 7 is still there so I'm sure she will want to go back. An informal poll...My wife hates it...My 17 year old son hates it. I'm not sure yet. Microsoft had better hope the rest of the world doesn't respond like my home has.