1. I don't know.
2. Unknown.
3. I know that Dan reads this forum and he has designed a few knives based on the posts here. After the YKLE came out, quite a few dogs requested a thinner CG version, and Dan delivered. The stainless models are of his own design, but several dogs had requested some stainless small knives, and Dan delivered. Many on this forum have been very impressed with the edge holding of Swamp Rat knives, but liked the Resiprene C handles that the old Swamp Rats had. With the Scrapper 5 in SR101, Dan delivers again. Nobody really knows much about the secret meetings between Dan and Jerry, but alcohol is involved.