Japanese saws cut on the pull stroke, not the push, giving you much more control than you get with western-style saws. The blades are thinner too, meaning you get a thinner kerf (the cut in the wood) with less effort. Can't be bad. Handy little saw to have in your double holster, for emergency pruning when your secateurs won't do, and you don't have loppers handy.
Not recommended for ambitious, heavy duty jobs - you need the Bakuma saw for that.
Tip: Go easy - folding saws are not as robust as their fixed-blade siblings.