If you want to evangelize against toilet paper, your effectiveness is going to be limited by the fact that the article is behind a paywall, but it's your choice, of course. Googling, I ran across what is probably the same article mirrored here: http://www.scribd.com/doc/33200788/Toilet-Paper-Free-Expeditions Dunno if it's okay with you that it's there, or if someone uploaded it without your consent; if the latter, scribd is pretty responsible about dealing with takedown requests from copyright holders.
Anyway, reading the article, it has some interesting ideas in it. Snow or river rocks seem like reasonable options in cases where they're available, but they're usually not available where I hike (summers in the Sierra). If they're available, I'll definitely give it a try next time the opportunity arises. Where I hike, I don't think I've seen wooly lamb's ear, and there aren't usually big fields of grass. Anything above about 8000 ft in the Sierra is pretty delicate ecologically; to me, LNT means not pulling up a ton of plant life for butt wiping in an area like that.
The article's emphasis on good hand-washing is great. I love the cartoon with A saying "I just took a dump!," and B saying, "I'll help you wash your hands." I've been B many times -- the subtext being that I definitely don't want to get backpacker's diarrhea from my hiking partners, so I'm always Mr. Helpful with the soap and water.