Excellent point, although you are correct about the difficulty of integrating such a sleep schedule into a regular work schedule. The diagrams in the Wikipedia article, however, seem to imply that sleep episodes need to be more or less equally spaced. Is this always the case? If not, it might be possible to "shift" a nap a little bit earlier or later in order to accommodate a full-sized workday.
Something like the Everyman would likely work if Mathias could take a nap during his lunch break. (If it's a short break, he could simultaneously try out intermittent fasting. :)) I also imagine the 20-minute nap biphasic would tolerate his waiting until the late afternoon to take the nap. I don't know about the others, perhaps someone with polyphasic sleep experience could weigh-in?
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