Of my knives, the Sampson's spearpoint KISS is my daily carry while my larger folders stay home.
The biggest plus is that it is so wafer thin that it you can comfortably keep it in that little change pocket of your jeans.
I've had one accident with my previous tanto standard KISS. I must have accidentally dislodged the blade while it was strapped to my belt. Unknowingly, I grazed my hand across the blade -- not once but twice -- giving myself lacerations. That was only once of wearing the knife almost everyday.
There was another thread warning of the lock failing. However, this was due to some fellow's friend who was using the KISS knife as a stabbing implement. Not what it was meant for.
It is possible, though, to hold the knife in such a way to insure a more secure lock-up. Since it is almost like a BM Pinnacle, or Sebenza style knife without a scale on one side, you can -- if right handed -- place the tip of your thumb against the pivot screw, while your forefinger naturally grips along the lock. Now your thumb is acting like a left side liner. As you grip harder, your forefinger will put pressure on the lock to the inside against the opposing pressure of your thumb.
[This message has been edited by Full Tang Clan (edited 09-23-2000).]