Neverwinter Nights 2: Mysteries of Westgate Interview

IGN's Neverwinter Vault has interviewed three of the head designers behind the NWN2 adventure pack Mysteries of Westgate.
How interactive are the companions. NWN1, NWN2, or MotB level?

Luke Scull: We identified the companion interaction in the NWN2 OC as being a little lacking in some regards, particularly the contextual relevance of some of their responses. Therefore, we determined that a) Companions needed story-contextual things to say rather than introducing themselves two-thirds of the way through the story, b) They needed to voice their opinions and provide input according to their personalities, and c) They should each have an interesting story that develops during the course of the overall plot, which the player can influence in some way.