It's interesting I did hear the term used last night when I happened along a Lisa Ling special on gender neutral people. One in particular was "E.J. Johnson" who happens to be the gender fluid off spring of NBA basketball star "Magic Johnson."
All in all, the show was a nice fascinating look into gender which included a crossdresser with a beard in a coffee shop.
The series is on CNN and here is a link to their web page.