Thanks for the info. yes, a while back I could not shave off the 8k and I thought the solution is going up the grit ladder. I bought myself a cnat with inconsistent results (but it worked because of extra laps). and finished on pastes helped too. but now I can see the true potential of 4k and 8k grits (4k easily shaves arms, 8k is sufficient to shave face without tugging.

I am very interested to know more about the convex bevel. what is the difference between a convext bevel and a rounded edge? I know that rounded edge is caused by pushing into the strop and it is a bad thing.