While it's easy to use, it's not easy to get a *good* edge with. For many knives it'll have issues reaching both the tip and the heel of the blade. The super-coarse diamond grinding wheel that it ships with really depends on the pro sharpening kit (another $140) to impart any real sharpness too.
As much as I wish it were a good sharpener for beginners... unfortunately, it's just not.