Feathers on top of the helmet of smithing are invisible for some companions.


[Linked Image from i.imgur.com]
Invisble for Gale, Lae'zel, Astarion and Shadowheart


[Linked Image from i.imgur.com]
It is visible for Wyll and the player character.


I know... non-paladins don't have a real benefit from that helmet, except the protection against critical hits, but somebody may use this helmet for style reasons. smile