Since it's sold now I won't feel bad about hijacking the thread...I'll start a separate one if I don't get too many responses here.
I'm trying to wrap my mind around how you make the 'belly' of the blade dip down without making the topline of the main bevel dip down also. (Not sure this is clear). It's obviously hollowground and you can't buy a "magic wheel" that slowly increases in diameter. Only thing I can come up with is you hollowgrind with a wheel/platen to make the topline of the bevel the way you want...then go back and flatgrind, per say, from the thinnest part of the blade straight down to the edge.
(That will either make complete sense or be utterly confusing...and I may have used some vocabulary wrong, please correct if I used wrong.)
You have to feel the blade my man and have a magic wheel.

-John