Now that one surprises me a bit. I agree with you it doesn’t take much to last forever, I think I could live out my days with a 5+mm Coticule anything bigger than 30x125mm and a DMT1200. The Les lats seem even harder and more wear resistant than normal too.I have a natural combo stamped super fine that’s ~ 2mm. A lot of the old Pike coticules were thin like that. Thick stones are neat to have but are just for bragging rights. Most people will never go through 5mm in a lifetime honing razors.