Well, your right, we would be able to tell a whole lot from those photos.
But it does look to me as if the baca-baca, ferulle and other silver work on the kakatu are new additions so it probably doesn't mean a much in the final determination of original intention and quality of this piece. From the bad photosit does give the impression of a working sword, not a tourist piece. Just because it doesn't have a seperate gangya doesn't mean it wasn't made to cut people up.
AFAIK Moro kris were still made with the intention of being a weapon far past the Cato imposed 1930s seperate gangya date. It does appear to me though that there was a serious drop off in the quality of Moro swords after the 1930s. Send us some better pics when you get a chance.