It's also in the FAQs... that's partially the reason the EVH was renamed the 78. EVH can be an acronym for "Evenly Voiced Harmonics", but EVH is owned as a trademark by Eddie Van Halen and his people, much like FZ is owned by the zappa family.
If you say "EVH pickup" to an SD representative, they'll say it off the record due to its reputation, but they can't put it as EVH on the site, however they will say the EVH is the 78 on the phone and in email to clarify things
Jason