I have very mixed feeling on the saw.
On one hand, like most of sak topols, it will work if you keep at it. But my only problem is that it is so short, you work harder moving that blade back and forth in just over an inch each way, that it is not that effciant on wood thicker than an inch or so. Yes, you can keep at it till you wear your way through a 3 inch thick tree branch, but it wasn't worth it to me to keep a sak with a saw on it. If I absolutly have to cut any wood that thick, I have a real folding saw in my day pack. If a sak saw was all I had, okay, I'd use it.
But on most small jobs, I find it just as easy to just use the main blade and cut a V groove around and then snap it off with the groove acting like a stress line. That's the way ourt old scoutmaster taught us to cuyt wood with our scout knives, which did not come with saw blades. But then, I'm not planning on sawing down any trees or sapplings if I'm not off in the woods. If I am off in the woods, then I have real tools on hand in my pack, like a Fiskars sliding blade saw or my old hatchet.
I have, in emergency, cut off tree limbs like one poster described, by putting some stress on them by bending them, and cutting at an angle into the wood. Even a basic sak like a bantam or recruit can cut off a inch to inch and a half diameter limb doing this. And it takes less time and effort. When I was a kid, before sak's became popular in this country, my dad got on old lady that had her car stuck in the mud, out by using his little Case peanut to cut off pine tree limbs the diameter of a thumb, to lay down a mat in the muddy ruts that the car tire could go over without bogging down. The green pine cut very easy, to be sure, and our pocket knives were all that was needed to get her car unstuck.
I think the saw falls into the kind of thing, that if you like it, go for it, and if not, the heck with it. I prefer a plain Wenger SI or Vic pioneer over a farmer, just because I can't recall a time where I really needed a saw. The time I did, I got by without it by using my head and a different technique. So my personal choice is not to have one. If I need to cut plastic pipe for a home repair project, I have the right tools on hand. If I'm out in the woods, I have a bigger cutting tool on hand in the little daypack that always goes with me.
I gave away my Vic hiker, and that was the last sak I had that there was a saw on. I guess I'll do without.
Carl.