Yes, but they were still fails, regardless of who designed them. Hornady has never had any cartridges until recently. The 6.5CM (2007) was the first one they got behind exclusively, and now with the PRC line, they are entering the cartridge designing game. Personally, once the hype starts to die with the 6.5 PRC, I see it going the way of the Dodo bird, too, other than small niche groups of shooters.
Rich's 6.5 SS beats the PRC in every single way, unfortunately no major manufacturer has gotten behind him to start chambering rifles in it. If they did, it would destroy the PRC's sales. Everyone wants to chase horsepower, and the SS is 100-150 FPS faster.
As much time, work, effort, and money as Rich has put into his wildcats, I would love to see them hit the mainstream. It would change the game for factory rifles with real world functional cartridge design upgrades over the standard same-ole, same-ole everybody has been using for 100 years. Old school still works, but improved design works better, IMO.