I am not 100% satisfied with how ESO handles less-than-human anatomy. For example my Argonian witch Speaks-With-Skulls has a tail. This tail protrudes from any gear she wears but instead of there being a hole or some other kind of adaptation in the gear she wears it simply just penetrates the texture – in a not so elegant manner.
I do feel like if you want to have your Argonians and Kajhiit they deserve something better. Like gear actually adapted to their anatomy.