Exactly right Tim, all we have thus far is opinions without corroborating examples of hilt form or motif form to firmly support any particular attribution. The material I presented simply is data used in basing my opinion, but the use of the British cavalry blade is quite compelling in corresponding this to the 'Berber' examples. The nail stud motif shown in the Indonesian example you have shown presents equally compelling data toward your suggestion.
Hopefully we will find that checkerboard motif someplace as that will be excellent for comparison!
Incidentally Fenris, that nimcha from Therion is indeed somewhat Napoleonic in that it is mounted with a French cavalry blade of Napoleonic period with its distinctly French Napoleonic scabbard. That, coupled with the persistant use of these French blades in the Sahara and the British cavalry blades on these sabres is typical of the instances we have discussed where the study of regulation military swords augments our study of ethnographic weapons.
Best regards,
Jim