Thanks BNT,
the pics give me the answer. re segregated I thought it meant flight and cabin crew not male/female (if that is what you were alluding to) but I see dragon man means (I think) that the two bunks only have a short partition between them.
i don’t know about the jumbo, but the 777 has a much longer partition between the two bunks and they are much more private than the ones in the pic.
interesting for long sectors, I would have thought the layout would make the rest less comfortable.