I have seen loads of them, but I am going back a bit further, way before Billy Sheehan. And my old home turf was near the musical petri dish of Berklee. Those "cats" were really fond of throwing them in EB0/1/2/3's back in the late 70s and early 80s. They were also extremely into throwing Jazz necks on P-basses, but that is for another forum. The point was they were not fond of Gibsons, but because they were plentiful and cheap (and popular several years before), they got modded a lot. More typically you saw the P-bass pup, or a DiMarzio P-bass pup, routed into the lead position, more or less, on an EB bass. The Model One moved a lot because you didn't have to borrow a hammer and screwdriver to dig out a hole. Oh sure, the d-bags had to drill a mini toggle in there to boot most of the time, but they got their hip Dimarzio fix with less work.
The sad truth is that the percentage of old Gibson basses I have run across over the years with modded pups and electronics is much greater than those left stock. The same can be true of broken headstocks and neck joints vs unbroken for certain models. In the case of the humble EB-0, there are an awful lot that have both breaks and barbaric pup mods.