You're right, but he does have an interesting slant on it, although probably not executable. No matter what you do, people are going to complain that it doesn't feel the same, or smell the same, or whatever. I'll also guarantee that many people will ask for a new layout "while you have it anyway"... It would be a mess, but hey, they've already got one...
However, thinking further along this line......
- Take slugs and use exactable (sp) thumb molds....
- Offer it as an option for those worried about cost (no mods of course)...