Yeah, I remember kask writing something like that, but I'm thinking it was "unusable" because it was crunch that wasn't greyhawk compatible. I think, suspect anyway, that bits and pieces of the Unusable stuff were nevertheless woven in here and there. I really think young Kask was trying to be as true to Arneson as he thought he could be while making a product that would conform to the expectations of his employer Gygax. After all these were early days and Arneson would have been a senior figure to Kask.

Jon Peterson has released a 'blogpost with a ton of info on Pygmalian and the Gin. Super cool stuff written by Arneson that clears up a lot about where these characters originated

There's also a lot of stuff to be mined for campaign background and narrative purposes. (Looking at you Havard) Check it out.