I have a Skarb sharpening system. Yes it does work as well as they claim. It will put a bevel on a knife that is better than a lot of factory bevels. It came with a two sided stone but I've been substituting some different stones that I had. You can use any 2"x6" or 2"x8" stone on it. If you have a lot of different kinds of blades invest in the extra clamp size for thicker blades. It does take a little practice to use effectively but not much. Not as much practice as a Sharpmaker. I don't use it as often as my Sharpmaker though because it takes a bit more setup time. I keep mine out all the time but you have to clamp the blade in, set the angle, clean stones (unless you have some dimond or ceramic benchstones). I use the Skarb to set a bevel or thin a bevel out, and the Sharpmaker for general upkeep. I wish that the makers of the Skarb would etch the degree scale on the clamp assembly instead of the two stickers they use now. The stickers haven't come off yet, but I'm afraid they will some day.
If you get a Skarb, do yourself a favor and keep a small log book of the angles you use on different knives. This will save you a lot of time. You can use the magic marker on the bevel trick initially, but that gets tiresome after a while. The Skarb is very well made and should last many years with a little care.
The double bevel edge you can do on the Skarb is as close to a Moran edge as one can get without a slack belt grinder. I'm looking forward to hearing your opinions of this system Joe.
Paul Davidson