Pfiel tools come sharp, but you really need to learn how to sharpen your own.
I had a Pfiel vee tool, brand new, factory sharp, and it cut beautifully... for a while. Suddenly the edge just broke off on one side. When I looked under a loupe, and I saw the edge was no more than a stout burr. I had to grind the whole face back to solid metal and re-conform the whole cutting geometry. I think Pfiel makes heavy use of buffing to sharpen their tools. Nothing wrong with that, but I imagine after buffing tiny vee tools all day long, you're going to miss one once in a while.
I don't like the 'wings' leading the point by much, if at all. As Rich says, this could tend to tear wood on the turns.
When buying new tools, I like to inspect the inside bottom of the Vee. It should be a very tiny radius where the two sides meet at the bottom, the smaller the better. Some vee tools have a large radius, and you will never ever be able to cut a fine line with this tool, unless you file,stone,lap, grind the junction to a very small radius. It's much more efficient to buy a tool with a small radius already made.
Look at the Pfiel profiles before selecting the sweep and size. Some show a sharp vee, and others, inexplicably, have a radius bottom vee. Maybe not everyone is carving gunstocks.