Thanks for the link, MC.
Maybe I'm wrong and Butch was in there laying out data structures and optimizing loops, but I seriously doubt he had any hand in actually designing the plugin beyond "it should have a de-esser" and such. Claiming design credit is like saying "I designed the space shuttle...it was my idea to paint it white".
This comment is in no way a slam against Mr. Vig. He's the real deal, knows his sht. But he mixed all those great records
without the Butch Vig Vocal Plugin. In fact, his career predates Waves and digital audio. The point being that he didn't need this plugin, and you don't, either.