I took the latest batch of M390 Artifex all the way up to the Ozuka Asagi stone and I used 1 micron diamond spray on that stone. They are crazy sharp, I would have to say on par with the AEB-L knives I did the same progression on as far as I can tell, but they took a little bit longer overall to sharpen.
Adam, how far would you take the Artifex in terms of grit when finishing. Would you suggest a 12 degree primary and 15 degree microbevel or straight 15 degree finished with a strop? Received the Artifex with your oval Wa Handle from Mark along with a 6 and 12k glass stone you suggested . Really nice. Thanks.