For many many years I liked my Owen Bush forged version of a Penan parang, with my own osage handle and cherry sheath, sadly no photo of blade.
Parang+sheath by
Last Scratch, on Flickr
One can see the sort of blade shape here:
Parang ilang of the Penan Silat Upper Baram; wooden hilt, the handle plaited with rattan; attached to it is a woodcarving knife; main sheath binds with rattan lashings; the small knife casing of betelnut sheath; belt string of rattan; blades are plain
drs.britishmuseum.org
Owen's is not forged/ground asymmetrically though, cuts the same in both directions.
Since 2018 I have enjoyed using a Condor Eco Parang with a slimmed handle and my own sheath. I have since moved the carry cord to the other side, so it hangs edge down. Edge up is fine...until you wear it with a pack belt!
. by
Last Scratch, on Flickr
My buddy wanted something a little different and I made him these two...and I have been meaning to make one for myself ever since. He really rates them, and he has lived and guided expeditions in Borneo and southern Africa, where one of these recently did him service in the thick riverine thorn scrub.
Billhook Sheath by
Last Scratch, on Flickr