It is well established that weapons do not necessarily remain within geographic boundaries nor tribal groups or cultural spheres. It is certainly possible, often even likely that though certain forms are associated with a certain tribe, a degree of them will be diffused to surrounding groups.
Roma Rana, I very much look forward to more on the spear typology and Bantu sword development. It seems any in depth discussion of these weapons is lacking here, though there have of course been occasional notes which I cant recall at the moment.
Tim, looking forward to your observations on that spear!!
All best regards,
Jim