Can Order armour skins be used by characters from different Orders?
If my Ranger is in the Order of Whispers, I buy some of their armour and thus unlock that armours skin across my account, can my other Ranger, who is a member of the Durmand priory, then use that skin?
Yes, you can use all skins of armors (and weapons) that have been unlocked account-wide for all your characters, even if they are in different orders.