Thanks Ian.....I have heard of these type of weapons... but never seen a picture.
After quickly scanning the links you provided, I can see the debate about tourist/genuine ethnic ..rearing its head. It makes logical sense to me that this type of weapon must have evolved at some time in some ethnic communities. But, as improved materials and weapons came about...these would become obsolete......such is the process of evolution
Tim, an interesting object.....also facinating is how many diverse communities have scarification and blood letting embroiled in their customs.