i don't mind the term, but it drives my dh up the wall. "i'm a registered nurse," he says, "not a "murse"". and then he adds a few choice words about the term "murse."
our unit has about 60% female nurses, 1 in transition and you figure out the rest. they have "murse" days where they all wear their camo scrubs
, and they have "murse parties" where they try to drink each other under the table.
as far as the manliness factor -- dh is also a martial arts instructor so no one with a brain would think of challenging his manliness! one cardiology resident who tried got kicked in the head for his sheer gall. (they took it to the gym, so i figure the resident asked for it or at least knew it was a possibility.)