I saw the diamond sleeves at the Denver knife show. They look to work real well. Some guys on the forum here have given them good reviews.
Myself, I wont buy them. I thing they are way overpriced. I picked up a flat diamond hone and a round pencil diamond hone. they didnt cost me any more then 10 bucks apiece.
I laid the flat home up againt the ceramic sticks and followed the angle.
I have a lansky sharpener too, I duct taped a piece of alum rod to the gerber diamond pencil hone and use that in the Lansky guide.
Both ideas are cheap and work great.
I have sharpend several knives with them, One which I made and it had a lot of honeing to do.
I just cant see spending that much money for the sleeves.
Well this is my humble opinion
Jack