My dad is ISTJ and my mom is ENFx i think...
their marriage made it, but b.a.r.e.l.y. And it wasn't too much fun at the start. After 30 years they are happy, but that's because the kids are out of their hair and my dad has less to b*tch about.
My dad is wound so tight and is so hyper-critical. We all call him the "dream crusher". Combine that with his tendency to want everything his way, and be a neat freak, well.... it was hell.
On the positive side, he has been a rock of stability in all of our lives, both financially and otherwise. But we've learned that we just have to hide a lot of things from him so we don't stress him out too much.
I honestly don't ever want to have a relationship like my parents'.. but it was successful. :P