A good question from Jim here - sorry for coming in late. I wrote the Song of the Paddle review of the Grohman Boat Knife, and like Jim, I had wondered about modifying it to Scandi grind. However, I was worried that it would give it a very acute edge that would be too fragile for serious use.
Anyway, in the interest of research, I tried it.
Nothing to loose but a bit of steel.
It gives you a very sharp knife - it would be quite feasible to shave with it. However, as expected, the edge is fragile and a few minutes of batoning damaged the edge quite markedly.
I'm going to re-convex it again.
I am still very impressed with the Grohman though. It is light to carry, batons well, prepares game well, makes good fuzz sticks, does not rust, costs relatively little, and the sheath (when hot waxed) is robust and secure.I have an Alan Wood Woodlore, a Wilkinson Sword Woodlore and a Marbles Expert, but it's mostly the Grohman you will find on my hip when outdoors.