Bravo, Paul. I was wondering if anyone was curious enough to try that. Looks terrible and nobody wants a handle like that. The purpose of using clay (and you only have to do it once to see this) is to show you a profile of what the inside of your grip looks like. Most other's grips will be similar. Since you don't want to make an ugly knife, you compromise by grinding some of your grip contours into the handle, but in general it looks like a generic shape. If you can contour where your thumb and little finger rest, and also the corners of the scales where your fingers wrap around, that's enough. The material removal is subtle, the feel is great. Of course it needs nice radiuses everywhere for comfort....I asked for some shaping guidance here and someone suggested that I try an experiment with clay, but I really didn't learn much from it unfortunately...
If your customer wants it to fit his hand in particular, send him a mock handle with some clay. But tell him not to squeeze like Superman.