this. Good old Ken likes stirring controversy (purposeful or not, it just happens), with comments like this:
"Today when every other amateur photographer is probably using the same camera (or better) than you are, one way to stand out and win more jobs is to master a lens like this and give your images something that weekend amateurs can't copy. "
"Will this lens make you a pro? Of course not, but if you are a pro, it will help set your work apart from the weekenders who offer to do your job for free... Digital makes it far tougher to stay ahead of the pack who probably already use the same camera you do. It's not like 1970 when you, as a pro, had the Hasselblad no hobbyist did. This lens is one way today to regain your edge. "
(except that I don't think many Pros really read KR reviews, so it's just really telling cashed-up amateurs to get this to stay ahead of other amateurs)