As tight as the tolerances are, there is still like a .0005 difference when machining the lockbar that makes it 50% lockup to say 90% lockup. Its been tried and done. Every once in a blue moon, you will find a match, but its very unlikely. And selling this so called " frankenknife " is what leads to warranty issues with the unknowing when sold.
On a side note, I did ask CRK for a carbon fiber Insingo awhile back and was denied. I also asked for a Damascus Insingo and they said Chris has had many requests, but had no intention of making them at that time. Hopefully eventually, he will change his mind.