It has been my casual observation that as we doublegun guys age (and, drop off) that most prefer to spend their money on unmodified guns.
We have a nice selection of Uggies, and Muslim (Turkish) guns that can be modified to our hearts content. But, an original French gun with a pedigree like this one has is a bit harder to find.
Not saying that the owner shouldn't modify it to suit his needs, but, do that with clear thoughts of just what he has.
Just sayin'...

Best,
Ted