ID takes precedence, but some IDs are not self-sufficient to establish who the character really is. The generic IDs, like the FL ID, just can't make the full picture.
With those IDs other players use the Tag, ship and equipment to establish the character's alignment. If I see a FL ID, Corsair Tag and Corsair equipment, I'll treat him almost like a Corsair. He may get a bit of leniency, but he has to be quick and very good at explaining if he faces a character of mine that is hostile/unfriendly to Corsairs.
