Will do.
I'm also hopeful that one day I won't need to carry the key fob. However, there's no feel good substitute for having the metal key with you in case your phones battery dies, the phone dies, the electronics in either the car or phone flakes out, etc, etc, etc.
I guess you can always use one of those tiny tin key holders that magnetically attach to the under frame of the car. You can remove the metal key from the fob and put it in the holder...real high tech!