Personally ..., cutting wood and plastics up to the 2" thickness range. There is zero kerf set to the teeth, so the cut path is very narrow meaning little material loss and that also means effective energy to performance ratio (same types of bennifits as Japanese pull saws). Yes, they are short-stroke-saws LOL BUT they are very aggressive cutters.
Also, the backside of the saw on my SAK is very sharp and makes a great scraper for shaving materials.
The flat cut path makes it excel at cutting notches, dovetails, etc.
Fashioning up a spindle and fireboard for friction-fire is easily & quickly accomplished.
Cutting up antler into coins for buttons, dog chews, etc. or even a bearing block for the above friction-fire set.
All types of uses once you actually start using it.
Took me a few years of carrying, thinking it was useless until I realized the potential.