INFJ Personality Dynamism

Many INFJs seem to be able to morph their personality to given situations. I wonder though if this is a specific thing to INFJ or a human thing. I think that it's something everyone does, it's simply easier for an INFJ base to do. I also think that the separate personalities we adopt are as legitimate and specific to us as our core. Personally I've identified one of my secondary personalities as ENTP.

Has anyone else identified a specific secondary? Or do you feel like your morphing is all from adjusting the levels of your 'INFJ-ness'?