I purchased the JawSaw to use in combination with my gas chain saw to prune several trees damaged by a recent storm. Some of the branches were 20' off the ground and I won't climb a tree with a conventional chain saw. Since none of the high branches were over four inches in diameter, it looked like the JawSaw, powered by my generator, might be what I needed to get the job done. Here's what I found...
For those concerned this is some sort of toy, it's not. It will readily cut through any branch that fits in its jaws and it seems built well enough to serve the homeowner for years.
It's extremely safe compared to any other chain saw, or even a hedge trimmer. Almost anyone could operate it and still have all their body parts afterward.
Using the saw without the extension is just about as easy as it looks on TV (which is to say "very easy"). Also, as shown on the infomercial, the jaws work well at preventing the blade from touching the dirt. This allows the user to quickly cut-up limbs lying on the ground, without the risk of dulling the blade.
When used with the extension handle the saw is very top-heavy and clumsy. It's Ok for a few branches but you'll quickly tire of using it in this manner. I usually found it easier to climb higher in the tree and use the saw alone. Still, for the price difference, it pays to get the extension, as it did come in handy a few times.
In general, it works great for what it's designed to do. Although it cuts slightly slower than a gas chain saw, it's much safer and easier to use. I'd buy it again.