I don't have any experience doing it, but I do own one. Looking at it, one entire side of the knife is flat from handle to blade, so the sharpened edge is on the beveled part of the knife, the right side of the blade. I imagine it's designed to perform best with the chisel grind it came with.
Still, I can't see any reason one couldn't just sharpen the back side too, though I suppose it would never be really symmetrical. I do think there's a certain elegance to the knife's design that would be compromised.