I've played two basses that Bob has done this to and they both played well and were very responsive. One being his own and the other, a big Rodier now in the hands of my former teacher. The Rodier is the one mentioned in the article he has made available.
Thankfully, the bow wasn't used but both basses have a very even pizz tone from top to bottom.
The fingerboards don't seem to have been sacrificed on either bass.
My Romanian Hybrid (Upton) has a full thickness fingerboard below the neck (not concave). Bob mentioned that removing the material would be necessary to match A0 and B0. I may just let him go to work on it and report back.
Certainly, for those of us without luxury of just picking another bass a couple of hundred bucks seems like a reasonable expense if it can improve the one we have.
And no, I doubt Bob will further involve himself in this discussion.