Not all maces and clubs were made to defeat armor. They have been around since long before armor. A whale tooth would handily defeat flesh and bone, with no ill effect to the tooth.
If sharpened bones, and horns were used as maces, and warpicks, why not whale teeth? Most of the peoples of the west coast of North America, used Walrus, and Whale penis bones as clubs. A weapon maker, will make a weapon from whatever material is available. Speaking of drinking from skull caps. Some tribes would make flutes, or whistles out of the long bones of the arm and leg of their enimies. They would blow these whistles, before, and during an attack, to "shake up" the enimy.
M.P.