Yeah, I can think of a few Macintosh programs that used some very unusual and interesting copy protection mechanisms, that without something like Kryoflux, will literally be impossible to preserve.
Its too bad they're so dismissive of Mac stuff. That's rather annoying. If nothing else, the variable speed drive the Mac used for so long, and as a result was probably the most widely used "non-standard" drive technology, is a perfect candidate for their Kryoflux product.