THE DIFFERENCE BETWEEN A MOROCCAN AND A ZANZIBARI NIMCHA.

[Ibrahiim al Balooshi]

So where is this form from and is the hilt related to the Somalian dagger hilt shown...? The Billao; A billao (Somali: billaawe), also known as a belawa, is a horn-hilted Somali shortsword. It served most notably as a close-quarters weapon in the Dervish State, at the turn of the 20th century.
The dagger has a double-edged, leaf-shaped, asymmetrical blade and a three-pronged pommel. One-pronged pommels with the metal tang protruding out from the center of the hilt

I place a Yemeni Nimcha variant on white background with silver in the Hilt for further comparison...Are they related?

The indications are that the project weapon is typical for a Saudia Arabian style with an all silvered hilt. Plate 30 Butin shows 1009 as being the same weapon which he simply calls Arabian.