Depends on the knife's intended use.
I have a scandi ground Nessmuk, not the usual grind on a Nessie from Fiddleback, but it can take a bite out of some wood.
I like convex blades for cutting/slicing tasks. I love all my Barkies, I can strop them back to razor sharp very well.
I've got some with hollow ground, don't know what I think about those yet. My Ka-Bar Culass Machete is hollow ground, sharp, cuts deep into wood. Yet, I worry about it's strength. I don't think I would order a large blade with a hollow grind again.