IMNSHO, EIIs are more moralistic/(self?)righteous and serious/career focused (cuz they value Te). IEIs are more romantic/weird and merry, and less focused on that. More ethical than moral. A more wilder sense of humor, but IRL we tend to be very wise who we show this side to so you might have to know an IEI well before it comes out. Also more into "stricter" logical categories as they value Ti not Te.

This is really stereotypical and not all that useful and I'm sure some people will throw a tomato at me for saying this.... but a lot of the EIIs I know have been really deathly serious, focused on practical matters like helping their community and succeeding in a career they like, and they have a greater tendency to be religious conservatives that are against homosexuality (or if they are pro-gay they subscribe to a very politically correct version of being gay that IEEs advocate for) etc, and IEIs are.... not like that at all. More the opposite of all that crap I just said, cuz they are from opposing quadras. They will clash with ppl like that. EIIs also go along more with authority and the status quo, IEIs are rebellious Betas and challenge it. IEIs also are very romantically compatible with SLE bad boy/girls. EIIs not at all! It will be like 'ew go away' instead of 'ooh baby that's what I like!'

Very generally speaking: IEI women/fags will fall in love with a douche gangsta. EII women/fags will fall in love with an asshole CEO businessman.

Though both yes know how to be nice and polite and tell the other person what they want to hear. Cuz they are both ethical/moral introverts. So both can follow the rules well and seem very similiar, though- as you get to know them, the similarities are quite superficial.