Have used Lanskey for some 35 years now. As the diamond stones became available I picked them up. Trick is, you never let a knife get to the point beyond that just a touch up is all that is needed. How ever, I had a custom knife one of the boys got his hands on and I thought ruined it. No so. I started with the black rough stone and worked my way down. Took some time. but I saved the knife. She dressed out that last Mule deer in colorado with no problem.
Here she is with a little Ruger 32 mag: