Ah...that I agree completely with. Sorry, thought you were talking about a hollow grind.

It certainly started life as a wedge with a slight hollow. The wear hasn't reached the spine (there's a slight "back bevel" at the spine that hasn't been worn through yet). It's close enough at this point to a true wedge that it makes the most sense to take it the rest of the way there. The angles support it..and are pretty consistent along the length of the blade.

I was thinking of addressing that narrowing/dip at the heel of the blade, but I think I'll leave it be -- it provides some protection for the thumb (rather than resting in plane with the edge).