Duane as far as the Certificate showing on the USATF web page, that's not necessary. There are only a small amount of races that ever need the Certificate.
As for me as Registrar, yes it is something I do as a backup to paper. Again, as stated I believe that if I have all backed up on my computer and on a portable hard drive -"then this should be enough." The Regional Certifiers, Vice Chairs and maybe the measurer have hard copies. Isn't this enough. Paper gets very big quickly and I wait the time when we only do electronic storing for at least the Registrar.