Hey, what people choose to torrent after they receive a physical copy is out of your control, so I wouldn't worry about it if I were you. It's probably going to end up being torrented eventually somewhere down the line, with or without your permission.

Plus, torrenting is not the evil it's made out to be, as long as you're not ripping the new Pirates of the Carribean movie and uploading it, etc., there's honestly nothing for you to be concerned about. It's an extremely efficient, cost-effective way to get your project out to many people in a short period of time. Makes PIF seem crude and ancient.