I'm no bushcraft expert, but here's some things I'm aware of:
1. The grind of the blade, a "Scandi" grind, is easily field sharpenable.
2. They're inexpensive, so you're not tempted to baby them.
3. Since they're carbon steel, they work well with a ferrocerrium rod to make sparks.
4. They're light.
5. The relative thinness of the blade makes them good for general slicing as well as splitting fire wood. Thick knives, while stronger, tend to hang up in the wood when splitting.