Although I agree that robe looks ugly as sin, since all the gear stats come from mods on items that do have mod slots, you can have the exact same stats as the ugly banana tree robe on something else that you already own.
I have ran into a lot of equipment that I did not like the look of it, so I just stripped it and placed the mods in whatever gear I wanted for my looks. I actually have been really happy with aesthetic options so far.
Basically its pretty much transmog from WoW, but a hell of a lot more customizable.