Take another look at Paul's keris -- it has a pinggang (waist). It tapers in and then flares out. There's a certain grace to it, as in most other keris.
That's what threw me off with mmontoro's keris. It flares out suddenly (almost like a sundang). This is either a hybrid or someone's bad idea of a copycat sundang. But at 13.5ins, it's too short to be sundang.
