Indeed, though just renaming the model would mean it still uses the female animations, I believe. You would also need to switch out the animations with those of a male model to get it to look right.
And even then, Atris would still have certain... feminine assets
It's definitely doable, but it'd take a little bit of work to do it well enough to publicly release.
I doubt it'd look that fantastic in the end anyway though, as the structure of the robes themselves are inherently feminine.