That sounds good to me and you say this pratice happens today.
If the tang was made from a seperate piece or to represent a special piece of spiritual metal, that needed to be seen rather than mixed in the forging of the blade. It may well explain why I can see the kris being originally made in three parts. The matching of the two parts of the blade may still be a reason for a seperate tang but I do like the special metal idea. A neat solution to incorporate and show this concept.
