This is the Ontario Pilot or Air Force Survival Knife. It's been around since the '50s or so and is a tried and tested tool. I bought this particular one as a Bug-out Bag stocking stuffer for someone else. For various reasons my plans changed, so I worked the edge over a little and took it out myself.
First, let me say that saw-back knives may not be exactly what you would expect.
I tried it out on a small hickory limb. It would work fine for notching but it is not really a wood saw. Since it is a pilot's knife, it is designed to aid in extracting a person from a downed aircraft, among other things. I didn't have any aircraft aluminum around to test it on, but I imagine it might serve for that purpose.
On the other hand, a few quick snap-cuts with the main blade took the limb off nicely. This is well-tempered 1095 carbon steel. You can get it sharp, and it is thick and stout. The balance and grip are very good for my average-sized hands.
The sheath has several tie-down points in it like the two holes at the bottom in the metal reinforcement. My old Ontario Marine Corps bowie sheath has a tie-down hole on the sheath, but it is a 7-inch blade and the sheath is a drop-loop -- so it hangs down lower. The way this sheath rides on a belt with the 5-inch blade, a tie-down is not only unnecessary but maybe not even a good idea. However, the ability to carry the knife in other ways is of value. I put a little paracord through the top holes which, with the cord in the bottom, would enable horizontal carry, strapping to a pack, or even rigging as a shoulder holster.
The first thing I did to the sheath before I took it outside was to saddle-soap it. Leather and carbon steel work great so long as they are given a little consideration and not excessive neglected.
The swedge did not come sharpened. I have remedied that to some degree, but it needs a little more work before I'll be happy.
Overall the blade shape will serve well for most camping and general use chores. It would be an acceptable defensive tool in a pinch.
The link above is to Midway, which currently offers the ASFK for $46.49 and includes free shipping. I paid more at for this one at Bass Pro, but, as I said, it was intended to be a Christmas gift, and I was time-constrained. It is definitely a quality piece of gear for the price. You can pay a lot more for very, very good knives -- but most won't be very, very much better.