Wow, I am a Windows Sys Admin, and an ex-web developer. I consider myself a technical person. The UI was very un-intuitive, and somewhat cumbersome. Some experimental UI's just seem natural on first touch, this is clearly not one of them.
I see a sharp learning curve coming for many people. IMHO this new version will have no more adoption than Vista, and I see the tomatoes flying on M$ from every corner (except the fanboys of course).
I also doubt enterprise users will adopt this, I mean this looks just unserious and unproductive.
Maybe it's just the beta, but I doubt much will change. Win 7 beta was very good, this one is just awkward.
Just get Bill back in the office...