Mormonism is fundamental to my religious beliefs and my personal sense of identity, and it is the community that I identify with most strongly. If I just assume he won't be home to eat dinner with us, it's a happy surprise when he is.
You I think are ok with that. And as many posters stated, it is something that needs to be seriously discussed with your potential partner. I've read through some stuff there and it all seems pretty tame so far.