IanBrianna raises an interesting point over at CDL: There must be other ways of approaching gender variance than necessarily and always going all the way and transition to ones target sex. Androgyny is another way of squaring the circle, so to speak.
"Georgene says 'Ian is androgynous'" my supervisor said one day, seeking to stir up trouble between me and a female fellow worker. "She's right!" I replied suddenly, and, surprised, he retired with a grimace.