I recently ordered a crossbill, and I was going to sharpen it on my sharpmaker when I noticed something that struck me as odd. every knife I've owned has a V shaped blade, with metal removed on both sides, meeting in the middle to form a cutting edge. the knife that I am holding has a half V shape, with metal removed from only one side, to make a shape that I will attempt to replicate below
where most knives are more like this.
I have seen serrations half sharpened like this, and the sharpmaker manual mentions it, but never along the full blade.
Is this normal for a Byrd Crossbill, and what should I do to sharpen it?