People have a lot of characteristics. Some people want to be pretty, even though they are men.
So i think that Epicene is reasonable in the world.
From my dictionary:
EPICENE - adj. 1. denoting either sex withoout change of gender 2. Having characteristics of both sexes or neither sex. The OXFORD American Desk Dictionary aned Thesaurus
I doubt that many "average " Americans even know the meaning of this word ! I thank you for bringing this term to my attention... I strongly recommend that you continue your ventures in English vocabulary by exploring a "Thesaurus" web site. I think there is one that will send you an obscure "word of the day" every day ... and you will learn more vocab and expamd and enjoy your English !