Well assuming that you allow your slave publicly acceptable clothing and remove her chains for the occasion, why should she not function as any partner?
I would never use the word slave about myself, but I am most certainly He whom I choose to obey's sub. I also work out in the community, and support him at various social functions and help to hostess dinner parties. All of that happens within the vanilla world, with only a few appreciative eyebrows raised at the deference I show to him. If anyone has ever guessed there is more to it than that, they have never said so.
My faith is an integral part of my life too, and my lifestyle relationship has yet to conflict with it.
cariad