Moro or Kalimantan ?

[VVV]

I have noticed that quite often swords that don’t look like "they should" per default gets labelled Borneo. On this forum it has happened several times to especially odd-looking Kampilan and Kris.
Alan Maisey once told me that he has experienced the same regarding unusual-looking Keris. The difference is that the Malays in coastal south Borneo actually produced Keris. But not with such a great variation of strange styles as sometimes is suggested.

As far as I have seen, and read, nobody has actually been able to prove that there really exists a special "Borneo look" to f.i. the Kris and the Kampilan?
None of them are indigenous Borneo weapons and were used by the immigrated, non-Dayak, Malay or Moro tribes.
I have tried to find proof in old sources of Kris being produced in Borneo.
But so far I have only found out that they were imported from mostly the Sulu Sultanate.

If somebody knows a good source as proof that this isn't the cause I would be happy if you could share it?

Michael