My husband and I met at an Evangelical type church. We were both quite committed to it together and very active together for many years. I converted to Eastern Orthodox Christianity about 7yrs ago. - taking nearly 6 years to do so (it never happens overnight does it?).
Anyway, my husband has stayed evangelical, although he attended a more traditional, liturgical Lutheran church.
We let the older kids decide where they wanted to go and 5 of them choose to join Eastern Orthodox church (our oldest is a priest's wife now - talk about My Big Fat Greek Wedding coming to life!! - LOL).
I think it works because our basic values haven't changed. We both agreed that the kids had to be in church on Sundays, they needed to learn about God's love, the Bible, and develop spiritual disciplines. It's important to both of us. I've tried to be very careful not to step on my dh's toes when it comes to him teaching the kids spiritual things. For example: He still reads his Bible each night and "talks about Jesus" to our youngest. I try to support what was important to him at his church when I can and he's done the same for me.
One of the harder parts was some of my more conservative Evangelical friends. I think they felt I should submit to my husband's spiritual authority and go to church where he went - no matter what my personal convictions. Well, our marriage just doesn't work that way. My husband would never force his opinion/convictions on me. And I wouldn't do that to him either. But, I think it did put some pressure on my dh and probably made him feel like less than a spiritual leader in the family because of my change.
It's not perfect and it wasn't like we haven't had bumps along the way either. There were a few times when it was difficult - especially in the beginning. We had to kind of make our own road map. I was fortunate to have a good priest who would remind me to be loving and that it was better to stay silent and be a living witness (rather than trying to argue every time we disagreed, KWIM?).
But, things have changed again in the last 6 months. My husband has been coming regularly to church with us. It's been nice. I know he still struggles with some of the beliefs and he really needs to sit down with my priest and hash some of it out... but in his timing. Who knows what will happen in the end.