There is a downside, that the pages may not be displayed correctly or nicely by programs other than Adobe Reader. I use two readers frequently, Adobe Reader and kpdf, but kpdf renders the fonts very poorly. This has something to do with the sort of PDF that the DTP software I used generates. (It was Scribus.)
This new Crud Factory site actually is sitting in my Comcast account alongside the old HTML Crud Factory pages, which for now still work the same as they did before. It’s likely not to stay that way.