Why get them up to speed on it, when returning the UI to a state they are comfortable with is so easy? From google search, to install, and setup of a start menu restoration program, and then changing all of their default programs to non Metro versions, is 5-10 minutes. They then have all the actual advantages of Win8, without having to learn the new UI, or bother with Metro apps. Trying hard to see a down side.
:facedesk: You clearly have never worked in I.T. - a third party hack to restore basic functionality that should exist out of the box is a no-go in business/enterprise, because for one thing Microsoft could break it at a moment's notice, and MS support would have every right to say "sorry, its not supported". First party support is crucial in this area.