I have the first BRKT Nano Slither.  Jimmy Stewart thinned the handle for me and it is now a part of my modified Ritter AMK PSP, replacing the scalpel blade.  I sometimes add a Alox SAK Classic, SAK money Clip, or Alox Bantam SAK to my PSP/FAK's in addition to the Nano Slithers.  
_________________________
Our most important survival tool is our brain, and for many, that tool is way underused! SBRaider
Head Cat Herder