i would say they are very similar. i had a razor honed by sham of both and i realy liked both edges. two razor s that was one on escher and one on coticule. the shaves were both nice . i just got my escher from jimmy. Its a nice blue/green escher. i have very limited experiance with these stones.to me it seems that it cuts rather well with water for a fine hone. I did 30 laps on water and i could feel the differance. i did a further 70 laps on water and seemed to harsh like i'd over honed a little. so i would say 10 laps at a time would be a good aproach. i tryed shaving of a fine slurry and the blade seemed duller, i did 30 laps up to 100 laps and the slurryed edge just was'nt as keen. I need to try some more variation as i only had this hone 10 days or so.
gary