Interesting. Another problem I might have would be finding the time to sleep. Night time wouldn't be a problem, but the day would be tricky. I suppose I could sleep during lunch and maybe after school, or uni or whatever. The problem with that is that I usually have sport or other commitments. Also do you think the body's sleep cycle could adjust finely enough that you would feel tired at those specific times?
Finally, has any scientific research been done on polyphasic sleep? Does it actually make you need to sleep less? And if so, why? I don't believe in fairy tales, and this is no exception. I need proof, or at least evidence.