Also interesting to note that the headstock design is generally able to be trademarked and a part of why almost all PBG current line up feature the paddle style.
There is also ongoing effort for their Pre Build range (not currently stocked afaik) to have it's own unique headstock design, but I'm not actually sure what's happening with that. I saw some pictures of some sample necks at the end of last year, but I guess the whole pandemic thing has put a bit of a kybosh on that endeavor.