Its the training I'm really trying to avoid. I use a VirtualBox at my desk, but everyone I work with does not want to learn how to tinker with that.
I've watched some folks avoid using the one workstation running Win7x64, despite the fact that it is the only i7 in an office full of Pentium 4's, because they forgot what I told them about pushing the button or I had forgotten to tell them how to start the virtual machine. It has already caused issues, and I think that with any kind of turnover it will continue to cause issues.