I have a folding pruning saw that cuts through limbs a lot easier than trying to chop through them with any ax or knife.

The saws on multi-tools seem too small to be used this way on any but the smallest limbs.

I don't think this type of saw is worth much trying to saw any substantial size chunk of wood, but for more delicate work I see a lot of videos where people are using them for other things.

But as I have never owned a MT with a saw blade I have no experience trying it.