just thought i'd update this thread. i bought a carbon 10" K-sab from the Sabatier outlet, and it arrived today (only took two days from order to arrival). first thing out of the box, the fit and finish looked great! definitely more belly than the Nogent, but not a bothersome amount. it's a heavier knife than my Nogent, but it is full tang with a larger handle, and the blade is a bit taller. the thickness seems comparable to the Nogent, with a bit more distal taper. i had been hoping for a thinner bolster, but i've decided that is a lot easier to slightly modify my technique to work around the bolster, both in sharpening and in cutting, than it is to take off all that steel. the blade was slightly wonky, with a hump at the spine that corresponded with a flat spot on the edge. those came off easily enough on a x-coarse DMT. now, the grind. despite the fit and finish being much better than the Nogent, the grind was about as poor. the tip was strangely tipped up, no pun intended, and one side was wavy at the bevel (well, both sides were wavy, but one side was just a little wavy, and the other was way wavy). fortunately, the problems were hills on the blade, and not valleys, so it could be flattened out. you can see where it almost looks like a clad knife, from where i flattened the side above the bevel. after doing that, i put an edge on with a King 800, followed by a green brick of joy, followed by .5 CrO on balsa, and the knife cuts great! very comfortable. i'm going to tweak a few things, but all and all, not bad for $87 shipped.

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(click image to embiggen)
(click image to embiggen)