gonna start with some things i consider negatives.
it comes with pre-applied stropping compound. I would of liked to see the paste on the side and let me put it on myself. This would of allowed me to put the paste I normally use on right away instead of removing what came on it.
The magnets! As you pull the knife threw the diamond grit you can feel the magnetic field as you draw the blade. This feels odd and takes away from a smooth motion of drawing the knife.
The coarse ceramic honing. Ceramic is a difficult material to work with and I may of gotten a faulty grind but I have found absolutely no use for this portion of the ceramic. I have found that my edges have been tainted by this portion of the ceramic and i would not recommend using it .
Ok moving onto the good stuff.
This is in my pocket when I see my mother, she throws her knifes in the sink and they are always in bad shape when i see her. The coarse grit makes short work of most edge defects and provides a relatively clean edge to start from. I keep this in my kitchen to touch up my knifes after use, only needing the ceramic and the strop to maintain the edge. This is in my back pack in the bush, its nice to pull the metal diamond portions off and touch up an hatchet.
I have fancy belt sharpeners and I reach for this most often. I would recommend removing the compound that comes on the strop and sanding it on 2,000 grit sand paper. Then i would put on 20,000grit diamond stropping paste on it. stay away from the coarse ceramic (this could be bias, im not sure if mine has a defect) .
I am all around please with this sharpener, there is some skill involved in using it but the end product is all around surprising. Would recommend for anyone wanting a inexpensive tool that works.