It is! It totaly is, This is a screen shot from Relucks, DL and see for yourselves. And Yeah Jun realy didn't change that much when genderswaped, although the CG set had more from the Genderswap tree, including more explicit images that show he's all woman.
The androgynous tag is for characters where you really can't tell if it's male or female, and it usually goes hand-in-hand with the trap and reverse_trap tags. Since Jun's biology now matches his appearance, I think the genderswap tag is sufficient.