I am starting a new thread so as not to get Flavio's too far off-topic.
Puff, you referred to Ian's and Kronchew's daab as "hua mon." What is the meaning of "mon?" I immediately thought of the "Mon" people of SEA, who are related to the Khmer and were at one time all across the lowlands of Thailand. Any connection?
In any event, I was suddenly struck by the similarity between this tip type and that on one of the few depictions of daab in the reliefs of Angkor Wat (held by the horsemen on the left):

Pretty much the same tip, I think.