I think this may be typical as well. As has been said in the past, urologists/vasectimists should be required to take annual classes to further their knowledge, and keep them up to date with new technology, studies, statistics, pvp/s, etc.
A vasectimist cannot realistically sell anyone a vasectomy, and tell them, or imply their patients outcome will be the same as theirs, or another guy's. While bad outcomes do seem to be the minority, they are very real, and generally not disclosed.
Personally, I think every man should receive the same paperwork. Not something that was hand crafted on site with the intention of encouraging men to do it to themselves. If a man doesn't get a real slap accross the face warning, it wasn't good enough IMO.