Has anyone seen these yet or heard anything about them.I saw them in a archery shop.They are made of Razor wire instead of a blade.Has almost a field tip and wire where the blades are.When bone is hit they go right through the wire folds down and once past the bone opens up to create amassive wound channel.I was told they sold quite a few they shoot nice buy no one has hunted with them.They shoot just like field points.Anyone heard about these?