Finally got off my ass and did a minimal amount of investigation. The reason Davison Design & Development (etc, etc, etc) comes across as so honest and up-front in their marketing materials? Court order. If they can't be honest on they're own, fuck that.
Found some great material. Sure, it's going to take more up-front work, but that's the way it should be, really. Hah.
Here's a great FAQ -- http://www.asktheinventors.com/faq.htm
and another great resource -- http://www.inventored.org/caution/extreme/