Re: 3... Geoff Anders of Leverage, who has been on Everyman 3 for months, said to me in an email:

I don't even feel like I'm polyphasic anymore. I just feel like I've reduced my need for sleep and I typically take a few naps. :)

I think by "polyphasic" he means "adhering to a specific polyphasic schedule" which is what the term often means, given that outside of the polyphasic community people are much more likely to sleep random/flexible hours even if they nap etc.