This author's gender bend fetish artworks have rather interesting dynamics. They generally portay the feminine triumphant or dominant in the more explicit works. Often frames the dominance of the femme by highlighting how burdensome maleness is.
Wait is transgender tag applicable here? Wouldn't they have been comfortable in their new bodies if they were originally trans?
I guess you could consider them trans after the change. Especially seeing how they're in the other's body, but dress and behave according to their original gender.
Fundamentally the concept of being transgender relies on the assumption that body swapping isn't real. If we apply the definition literally, then they're not trans because they are the gender they were assigned at birth. However, their genders are different than the genders the bodies they currently occupy were assigned, so it's extremely descriptive of the transgender experience. They even transition and everything.