Taken from Bark River...
A “Convex Scandi Grind” is a grind that is half way up the blade, but the grind itself is convex. Contrary to modern thinking, original Scandi grinds were (like nearly all knives) convex grinds. The convex grind allows the edge to be supported by nearly 400% more metal.
Bark River only do A2, and now the newer CMP-3V. With one or two Carbon/Stainless jobs.