Unless you have 26" wheels and want to ride fat, MTB tires, I am not sure how many (if any) mid sized (e.g., 32c) tubeless tires there are to choose from. I have tubeless on my road bike. Great feel, but I would question the durability under load. Also, the new Schwalbe One aside, which the guy who built my road frame and tubular wheels is skeptical about, they are heavier. Finally, not all punctures will self-seal, so you have to carry at least one tube with you anyway. There is no "extra maintenance" required to install a tube in a tubeless tire if you have to. I wouldn't bother with them for touring.
BTW, I would like to recommend this book to you:
http://www.amazon.com/The-Paradox-Ch.../dp/149151423X