Before you take off in your brand new Vibram Five Fingers, seriously consider going barefoot first. Build stronger feet and diminish your risk of injury. I trained barefoot for two weeks before buying my VFFs, and still run barefoot every once in a while, to make sure I am being able to “read” the environment correctly and maintaining proper form.
I like the VFFs very much and as of the time of writing this I have been doing most of my running on the VFFs but none of the walking. I feel that my heels take too much stress while walking.
That means: I run in VFFs, but to walk I prefer running shoes. Yes, it is funny!