Hi Ben,
I agree that this kind of scabbard and pamor blade isn't what you usually see in Borneo. That's why I find these SE Borneo-Malay parang interesting as exceptions.
I assume you are still travelling, and didn't bring your own computer, so you can't check the references I have given above?
Here is the Parang from Schmeltz I referred to before.
The Leiden collection database is found on
http://www.rmv.nl/
Michael