Thanks Jim.
Ron, a related thought is that a lot more Lumad (i.e., Bagobos, Mandayas, etc. -- the non-Islam and non-Christian ethnic people of Mindanao) converted to Christianity, as compared to Moros, as we both know.
And continuing on with our speculation, for me it's not a remote possibility for a Lumad who has heard of Christianity to 'hedge' his bet for good luck by adopting the cross icon on top of the usual sun and serpent-croc symbols on his shield.
In fact the peoples of our islands are very
syncretistic when it comes to religion. Even up to now.