As mentioned, a scandi grind is ground on both sides, a chisel grind is just one. Either way the angle is built in for freehand sharpening. I've only used Charlie May's scandi grinds but have come to really like them. Super easy and fast to sharpen on a DMT.
Charlie's scandi grinds turn out razor sharp...I think the cutting edge ends up being a finer angle than a standard flat or hollow grind with a bevel.
