DDO Wiki correctly states:
- Racial restrictions of the original item apply also for its cosmetic copy.
http://ddowiki.com/page/Item:Mirror_of_Glamering
This is because generally speaking, most race-restricted armor technically doesn't exist for other races. There's no Half Orc, Halfing, or even Elf version of the Morninglord armor, which is specifically created for the Sun Elf model. (With some work we could add other versions, but that's generally considered lower priority than just getting new art for armor or weapons in general that everyone can wear and isn't tied to iconics. We wouldn't really want to do it without doing all other races except docent-wearers, which would require a significant amount of time.)