I haven't used those so I can't tell you. General advice would be do strokes in groups of ten on the CrO and test. If need be do 10 more and just continue that routine. I would guess similar for the Naniwa however I'm sure someone with that hone will come by and give advise from experience. The razor won't change the routine just the number of strokes it will eventually take to get it back up to snuff.