The pictures are beautiful! I hope I can continue to push forward my thoughts that honing is more about "scupting" than just tearing away at metal indiscrimently.
I believe, but do not worry about, a finite amount of laps that each steel type (carbon and stainless) can withstand, even without pressure. But, 60-80 passes doesn't seem to be the range. But, I would be curious if you think you find that point.
I think a few more examples of the results between the 10 lap range and say 60-75 would be pretty conclusive. I've always done lots and lots of laps, and found better results. But, it's so easy to develop bad assumptions.