i seem to recall reading somewhere that the moro started carrying the gunongs somewhere during the insurrection at the end of the 19c/early 20th when they were forbidden to carry the longer kris and barongs in public. the smaller knives could more easily be hidden yet were still deadly at close quarters.
my humble item, hardened edge is very apparent in vinegar etch.
my touristy one: note the pointy luks, thin sheet metal guard, thinner flat x-section blade vs. diamond x-section in the other, no hardened edge or laminations, grip ball rather than the more form-fitting version of the earlier one that fits nicely between the fingers. decorations are incised in the ball, not wirework.
the top one lives on the night stand by my bed justincase. the touristy one is relegated to the closet.