In-game username: Un1korn | Happy member of the PCNA UESP guild (Resident Daggerfall Covenant enjoyer) | Main & basically only character: Crucian Vulpin, Imperial Dragonknight of the Daggerfall Covenant, and Undaunted Bulwark (I tank) | Mountain bike enjoyer and vulpine appreciator | If you know me from PCEU: No | To ZOS: THANK YOU FOR LETTING ME BRING MY HORSE INTO BATTLE!
Do you only have one weapon bar equipped? If you weapon swap between and empty slot and a slot modified by an outfit, it generally reverts to the non-outfit style. So either have both weapon bars equipped, or just reslot your existing weapon to have the style properly display.
I bought the set off the Crown Store, changed weapons styles. It appeared in Tamerial. Went to do PVP in Cyrodiil, and it changed back to my normal set. I lost 2 outfit tokens and it costed me 6k gold to get it back.
Praying the Daedric Gods will make Cyrodiil great again.