Re: My husband and my feet...
Congrats on opening up to new experiences with your husband. As tough as we men want to be, it can be extremely difficult to open up about things (especially sex fantasies) that some could label as "unusual". Embarrasment and humiliation, particularly from a woman, can be devastating. I think you handled this quite well, and your husband feels safe with you about this. On a deeper level beyond body parts, this could strengthen your bond.
I do agree with Shaggy, as I would not have this dominate your sex life (as in using it often). Not doing it every day could keep it fresh, fun, and special, perhaps as a reward for being a "good boy". Or a bad boy, whatever you're into.