Thanks for the link Jose. I have, of course, been to Federico's site many time and have seen this.
As for these gunongs, i believe you have indeed seen them both as they were both posted at different times in threads i am pretty sure you were involved in. I confident that they would be 1920s at the very lastest and probably a bit earlier.
As for fighting with a kris in one hand and a gunong in the other, i have never heard of that from reports on the Moro. Do you have any references for this info? I am aware of the sword banning, but i believe these gunongs pre-date that order.