I've tried with the Leatherman mini sharpener rod but the result wasn't something to write home about. I also tried with the Spyderco screwdriver/file thingy but it was too wide to fit in the RRT's blade space. I'll give the sandpaper a try but given the LM sharpener is diamond coated, I wouldn't expect any better results.
FWIW mine is the MT.o damascus version.
