IME when you put one layer of tape on the spine and reset the bevel it will end up being 'correct' relative to being set with one layer of tape. So if you always hone that razor with one layer it should give you the same results. For the average person I don't think it would be honed enough in years of using it to make a great deal of difference. I think that some of these razors seen with a lot of wear were either honed by someone who didn't know what they were doing or by a pro barber who shaved many customers day in and day out and honed the razor much more than an individual who only shaves his own face would. Especially seeing that most of us have rotations of many razors. Just IMHO.