Today I found and ordered one of these: https://siamblades.com/products/hand-forged-thai-sickleI ended up finding these guys: https://www.redpigtools.com/CUSTOM-Order--Cambodian-Style-Farmer-Brush-Axe_p_1385.html
I ordered one (wait time was a month or so) and have used it. I'm pretty happy with it, the thing is a beast and I've been able to clear a good bit of brush with it. I can post some pictures later if you'd like.
This is the only Thai option I could find that ships to the US and Canada. I asked them to use something other than bamboo for the handle.
I'm still interested to see the tool you ordered from Red Pig as I may order one from their as well.