I started to use a BBW between the La Pyrenees and my La Vienette just to save additional wear and tear on my Coticule. I'd only had my Coticule a couple of years, but it was thinning down at an alarming rate. It is a natural combo stone, and the La Pyrenees comes glued to a BBW, so I thought I'd better not let them go to waste. I don't mind the slow speed.BBW is, to me, a pointless stone for honing razors. It can be used, sure - why anyone would want to is beyond me though. But that's another story. Maybe if you don't have a Coti - maybe.. just maybe.