Using my acquaintances and friends as examples, the distinction I'd make is that EIEs tend toward mental presumption and praxial assumption of social control through public antics filled with calculated outrages, while IEIs are likely to go with the flow in social situations and become ensconced within a smaller group in larger scenes. As a result of this, EIEs tend to maintain fairly high profiles while IEIs, despite not being at the forefront of social happenings, somehow often know eeeeeverybody.