Before I forget … I was considering Butins Charts on Nimcha swords and noted the potential re jigging of hilts from the standard Saudia Type Nimcha to Karbela form . This type already had a crossguard and sufficient material in the pommel region of the hilt to change it to a Karabela hilt...Thus is there not a potential overlap here from these weapons otherwise known as Nimcha  to  a type of Karabela...or subspecies of... 
 
See 1007 and 1008 below.