Interesting. I like how EIIs give me familiarity vibes. There's plenty of other sources of intellectual stimulation, imo. Like internet peeps, workshops, libraries, whatever you want. Anyway, no offence to any who might be reading! You aren't even boring to begin with.
Anyway, I'm more likely to get on a Rational's nerves than they are to get on mine, so...
Anyway, I think two Intuiters is only slightly above two Logicals in terms of Bad Ideas. I could see a mismatch between j/p causing a tension and a loss of cohesion as the relationship progressed.
Basically, this is a tricky question with no neat answers. I'd certainly say semi-dual is vastly preferable to any non-duality quadra member. Though, I'd have to discard Mirage. From the ILIs I know, they're pleasant enough, but I could see the Ne/Ni mismatch as being very uncomfortable for the both of us. Perhaps there would be more cohesion, though, even if it did turn out to be a bit of a strain.
EDIT
Jeez, I'm being pessimistic right now. Even semi-dual seems like a bad option.