As I understood it, Pete hasn't used any PRS since they all got stolen on tour. I can see a working musician, even one that regular slobs working a day job would deem "rich and famous", might not have the cash to replace his gear after a catastrophic loss of that type, but I'm still surprised PRS didnt send him out at least one guitar to keep him from having to build partsocasters. Who knows, though, maybe they did and we didn't hear about it.
Signature models in general have a limited market, because of the unavoidable comparison to the endorsing artist. Id love to own a baritone PRS...but I'd never buy a Mushok model because I hate the band and I refuse to talk about it with other guitarists that notice my gear - probably its an excellent guitar, and Mike Mushok is probably an excellent player. I like Chevelle a lot, and I'd be more likley to buy Petes signature, but if it was done to his specs with the Chevelle logo on the board, I wouldn't want it either, because its a guitar customized to some other guy and their band. No thanks. Same reason I couldn't buy a Hiland - I loved everything but those inlays - might as well have said Johnny on the fretboard.
To me, the sweet spot would be to have a standard baritone - that way no one guitarist/band has their own endorsement for the only baritone you can get, but multiple players endorse the baritone model and maybe have customizations on their own instruments unique to them. Fans can see their favorite bands playing their customized baritone, get the standard model to have the same instrument as them but remain individual, and imagine the day when they'll be rich and/or famous enough to get their own awful gaudy custom inlay or whatever they want on the guitar.
I didn't realize he had a gold baritone as well. 
