I lay 'em flat on the stone. If your stones are flat, it's the easiest knife in the world to get lazer sharp, imo. Then if that zero edge don't hold up for your cutting, add a microbevel. If there is much of a secondary bevel on it, it may take a while to get to zero edge.
I put a small micro bevel on ONE side on some of my scandi's, but only the side that faces your knuckles when you hold the knife.