I believe I have an Iranun Kampilan,or so Xasterix tells me. It seems that it would be pretty cumbersome for boarding another vessel but it cerainly would be a fearsome weapon once one was ashore raiding.
I only have 2 examples of these swords, and I believe he was referring to this one that went to Macao for the H.O.S. exhibition.
Pardon the poor photo quality.