yes both change, but I think an identity can be engineered, just like banning it has to do with public perspection. whilst your personality can change given your knowledge and experience, its more generic. I might identify with a certain group or concept today to change people's perception, but my personality is a reflection of my inner self, irrespective of what might happen within there will still be certain level of coherence in my behsvioural pattern, well, expect in cases of traumatic events where an individual's core/essence is scattered.