Vallotton Discovery Lock custom ??

[nowhere fast]

Hello all- I've been seeing quite a bit of press about the Timberline/Vallotton knife, but my question is; Has anyone ever seen a custom version of this ? I imagine Butch must have made some early versions, perhaps some kind of prototype ?
I'm a big fan of all the Vallottons and would love to see the early/custom versions of this knife. Thank you, Donald.