I'm with Dryer. While I carry TP as a just in case, I haven't used it in quite some time. I use a few small sticks and then water. Dr. Bronner's for washing my hands, and then a bit of Purell.

I also ensure I let my hiking compatriots know that's what I do, usually while reaching into my gorp. Funny thing, no one ever takes any of my gorp when I offer....

Edit to add: I should have noted that it is a great idea though!