The EVH one pickup thing is kind of funny. He ran guitars like that for a little over 10 years, all the while still using an Ibanez with a Les Paul setup.
Since the early 90s, he's been using HH guitars, some even with a tone knob. When asked about why he started using a neck pickup, he said the original home made ones only didn't have it because he couldn't get the switching to work properly. Of course, before that he said they had one pickup because it was hard to get the amp set for both pickups to sound good, which all of us with multiple pickup guitars know is total bull****.