I am from a christian background ( though not strict ) and I married my husband who is a Malaysian Muslim 10 years ago.
I converted to Islam, as in Malaysia, there is no compromise, if you marry a muslim, you convert, end of. I was happy to convert - no problems.
I always saw my husband as a bit lax and therefore I didn't feel that there was too much different or alien between us even though we were from different cultural and religious backgrounds.
Everything went as usual until we had children.
This is where I agree with PussinJimmyCHoos.
My husband has changed over the last year since our first DS turned 5 and we had our second DS early last year.
Now he losses sleep at night worrying about how he is going to teach them about Islam in the UK without the same support there is in a muslim country like Malaysia. He also has become a lot harder on me and insists I must now know more about Islam.
We don't disagree on name choice or the other trivial things as we are pretty united in our way of thinking.
All I would say is that from my experience, when children come on the scene, suddenly your lax, horizontal muslim husband may become more of a authoritive muslim husband and this is hard to adapt to if you assumed he would always be the latter.
As long as you are prepared for this and the fact that he may at this point insist you should convert for example...then the best of luck!
I wouldn't change my husband or my kids for the world...but life does throw challenges at you when you have different beliefs and backgrounds to contend with.