In my experience in Hardy, depending on the font some characters may not print if you use the OpenOffice 2.4 PDF output system, yet if you use CUPS-PDF you get a much cleaner version.
Now OpenOffice may get sorted some time before Intrepid but...then again, we can't predict whether or not OO will ever break again. Having the CUPS system around as a backup can't hurt.
Plus there's God knows how many other apps out there that don't have PDF natively.
As one screwball example: I just fired up IE6 out of Wine, and was able to print to PDF through Wine and CUPS-PDF. Does anybody think IE6 is going to get native Linux PDF generation? Right.
No messin' with CUPS-PDF thanks!