SE termed the feature 'Egi Glamours', so that's enough indication in itself that it's a SMN-only deal. While it's possible, based on feedback, they may expand it to other Jobs their primary reason for doing this is to appease players that were expecting new playable Egi only be told they weren't going to get them in the end.

Quote Originally Posted by CuteWhisper View Post
I would like to be able to change the look of the fairy as well as a SCH. They didn't get new fairies either. I would love to be able to use a cute Carby.
Except the difference is SCH's were never given the impression that they would get a second Fairy in the lead up to the expansion, unlike SMN.