I got my JawSaw as a Christmas gift and just got a chance to use it over the long Easter weekend. I'm installing over 400 ft. of fence, much of which is very close to pine and spruce trees, and I used the JawSaw to remove the bottom 4 ft of branches on numerous trees. It worked beautifully. I've got over an acre and lots of trees, so I can see using my JawSaw quite a bit.
I would have given it a 5 star rating, but the chain did come off a few times. It's really easy to put back on, but I have to take one point off for that. All in all, it's a great tool to have for yard work, especially if you have lots of trees to content with.