The multi-shape diamond file really sets it apart. As a "smaller companion to a serious wilderness survival knife" this thing may be the absolute ultimate. Given that and an ATAK, Battle Mistress or whatever...damn, you'd be set.
Plus you get a backup blade with quality beyond any of the others.
Sal, I've got a suggestion: make one available ASAP to the one of the better Kydex sheath vendors. Scott Evans at Edgeworks would be good, or Blade-tech, or any of several others. Avoid Stellar if they're still in biz. The idea being, people will have an option for a sheath source BUT Spyderco won't have to actually build or stock anything.
If I were to advise Scott, I'd tell him to get some 3" long extension hex bits in regular and Phillips and set the sheath up to be able to carry those plus perhaps have room to take a few extra "short bits" of whatever type people want to score at a hardware store. I have a MK2 Gerber Multipliers (last model before the locks) and I've always kept a couple of long-shaft bits shoved down beside the main tool in the sheath. They've bailed me out COUNTLESS times. They're about $2.50 each for good ones, "shorties" of various types are a bit over a buck, the user could supply those as needed. A single Kydex sheath that held the tool, a couple of long-shaft bits and a few shorts would the ULTIMATE setup.
Jim March