I guess most people who handle kives do cut themselves sooner or later. It´s not nice to have someone witness your misfortune.
My father cut himself in thumb when he tried show me how to savely split a piece of wood with a pocket knife. At that time I was 7 years old. I learned the hard way that it´s not a good idea to laugh at such an occassion.
I own to razorsharp Spydercos of similar size. One stops the blade at an 90° angle when closing one handed, the other doesn´t. On one occassion I realized that one I was handling was the one that doesn´t stop just a 1/10 of second before the blade passed the 90° degree angle. The knife lived up to Spyderco´s reputation and left a pretty nasty cut. Fortunately I managed to do this without witnesses. I handled both knives with more care since that. The memory of this incident never faded even though it happened almost a week ago.