I don't see the point. I have been carrying a pelvis saw. You just cut around the butt hole with your knife and then make two cuts though the pelvis with the saw, removing the center of it. This exposes the intestine all of the way to the butt hole. You can then just lay out the bowels intact including the butt hole. The knob on the end of the short saw blade keeps you from puncturing anything.

The saw is great for going through the sternum too.

Bob