This is a clever solution to this problem, and there are instances where this could be helpful.

However, if you happen to be attached to FCP, and have basic rhythm, you can perform a more controlled version of this process in either FCP7 or FCPX using MultiClip/Multicam Editing.

http://youtu.be/kmFmyXWaQHM?t=3m27s

Using keyboard commands, in real time you can cut between up to 16 different video clips. I basically play my keyboard like a drumset, and the result is video that is synced to the audio, and allows more artistic choice over the content selection.