I just started using those, for touchups and field sharpening, and love the edge they leave.I use coarse, and fine grit,then strop on bare leather, and the edges are toothy and they shave too! I used the coarse grit to reprofile my Paramilitary2 in s30v and its not that hard at all! So much easier than using water and oil stones, plus less messy! I put an edge on few kitchen knives, and they cut like crazy! I have a small beltsander too, but use it just for rough profiling!great stuff overall!