well i don’t know about sharpening one, but i had the opportunity to handle one today. it had a very stout feel to it and was allot bigger than i expected, the handle had a very round but secure grip to it. the knife was extremely sharp and you could tell allot of time went into its design(the glass breaker was a cool add on). the knife looked very sturdy but i found i couldn’t wave it open, the lockback design didnt appeal to me, and over all it was just to oddly shaped to be carried on a regular basis.