Wow, incredible that you would take the time to do that Mike, thank you!
Now, my knife in the initial post (the one you used here) is rather simple in that it has no ricasso and the bevel line is parallel to the knife edge.
In the second knife I posted you can see that the line of the bevel and the line of the flat part of the knife don't match up. This is because the bevel line isn't parallel to the knife edge everywhere. The bevel line comes closer to the knife edge as you come towards the tip.
Do you think this can be done with extrude along path?
Also, is it possible to give the ricasso a curve instead of the 90° hard corner it has now or do you think I will have to go with the subdivision method?