As a matter of fact, yes. How did you ever guess?
I've done cleaning up of checkering, some checkering on grips and stocks, but NOTHING like the tight curve on the fattest handled khuk I've seen. Add to that the taper of the handle from small and (nearly) round behind the rings to large and lenticular (if that's the proper word). Just laying out the lines with pencil and a plastic (as in bendable) ruler would have me talking gibberish to myself.
I have found that for wood that will stand up to it's use stippling works well and you could use checkering tools to cut the borders to half or 2/3rds depth initially, stipple, and go back afterwards to take the borders to full depth. Using an irregular triangular shaped bit worked the best for me. Then stain the stippled area darker than the unstippled, apply thinned finish, then tape and finish the part left smooth. It does definitely look good and leaves no doubt there's been custom work done to the handle. If you really wanted to go whole hog, the unstippled part could be carved. I'm sitting here looking at my carved handle Kumar Karda, and, well, my eyes are starting to glaze over, my creative juices starting to flow, and humming the Woodchuck cheer ( Gimme a "W", gimme a ) ... but that's using wood.
While I'm sure it could be done, the hardness and slipperiness of horn make me cringe to even think of it. Umm, maybe I should go and take my medication now.