I've designed male versions of Tegan and Nyssa, but never made them or brought them out to conventions.
It can be done, I'm sure, but very few people would 'get it'. That said, if you want to do it, go for it! I'd love to see what you do with the character!
My next con: FanExpo
Femme!Fourth Doctor (Doctor Who) - 85%
Monkey D. Luffy (for Kai) - 0%
Cubone (Pokemon) - 20%
Blackadder Group (Blackadder, Baldrick, George, Melchet, Darling, 'Bob') - 0%