Thanks for completing the picture comparison, Michael.
Just a clarification, a keris debek can also include a normal Malay keris that had been shortened or broken/reshaped. They are different from the bethok type of keris, which is purposely forged to be short and broad. A keris debek sheath is quite distinctive. I have one (no blade) and will take pictures to post online over the weekend. A keris bethok can be sheathed in normal Malay type of sheaths. Hope I don't cause further confusion!
I noticed the pictures in that post had somehow gone out of sequence. And I realized that the Malay blade with Bugis influence might not look so obvious, so I'm posting another one here, with more prominent greneng and janggut, and hexagonal cross-section (unfortunately, picture still doesn't show that last part well).