The question of how often blades are touched up is interesting to me. I use pasted balsa wood strops primarily, which requires an edge trailing pass. I didn't think much of it until a day or two ago when someone said they thought that honing on stone produced a more durable edge in comparison because it was less likely to have a metal burr at the edge because of the edge first passes. I don't know whether this is true or not. If so, it would have a bearing on the original posted question.