I use waterstones but one of my guys and friend thinks they are too messy. I offered him both my 8k and 16k shapton glass stones for 100.00 which is a beck of a deal for two stones. He is thinking of buying the tojiro pull through sharpened. I personally don't know much about it, but have used that type of sharpener in the past and was no good for my knives. What say you guys? Have you used it and how well did it work? He is using Tojiro do knives.