I tried it for ~six months during undergrad, mid-'00s. I didn't feel sleep deprived but I disliked feeling so out of sync with everyone else.
My biggest complaint was the feeling of time being seamless. My six sleeping periods were all of the same length, so I sort of lost the feeling of a concrete 'yesterday' or 'tomorrow'.
I usually take statements similar to "in this house, we believe science is real" as conveying the message that the people believe in the scientific method, rational inquiry, evidence-based arguments, etc, rather than a set of specific scientific theories.