Now that I think about it, I don't think my conjecture is valid. I should look at a sharp razor under a microscope and see what the serations really look like. In the end, I am just trying to figure why or why not the blade should be stropped using the x-pattern technique.

I am guessing their is a reason. Some have offered the conjecture that the leather is not flat, and the x-pattern mitigates it. That could be. But a side effect is the edge closest to the the monkey tail spends less time getting stropped than the edge further down.