My cousin bought one, we havven't used it for much, found it was handy for gutting a rabbit without nicking the insides, but doesn't really save much time (if any) if you already know what you are doing with a traditional hunting knife.
It'll shoot the fleas off a dog's back at five hundred yards, Tannen, and it's pointed straight at your head!
I think it would be good for skinning. I have had very little luck with the gut hooks on the back of the blade. Many more times I have worked a knife up under the skin and then pulled outwards and upwards/downwards with the sharp part facing me. This looks like it would work similar to that method. Also with much more blade surface area it should stay sharper longer and be easier to sharpen. All that without ever using one so take it has purely hypothetical my opinion.
If you are processing a number of animals then it is a good idea purely from a speed perspective. Having to carry an extra knife for one or two animals is kind of pointless. They are not for skinning. Just for quickly and cleanly unzipping the belly. For basic use you can just use your 'hunting' knife and run your fingers behind the spine as you open it up. Don't get you fingers in front of the edge and keep the tip of the knife above the tips of your fingers. That said. I do plan trying to make one this winter.
And i agree with Sungazer. Gut hooks are a gimmick. I've made a few and used others and they aren't as effective as i thought they would be. In fact, i won't make another knife with a gut hook.