Using a single sheet towel.
B, A, using one whole side of the towel. Then fold it in half with the dry side out. Shoulders/begin C3, C4, C1, finish C3/C2, D2, D1, E1, E2, F, all with one side of the towel. Then flip it and use the dry outer side to do a quick pass in the same order.
I suspect you’re right. But there really is never a good way to tell with these kinds of experimental techs. It could be a runaway chain of improvement. Or it is probably even odds that there is a visible and clear decline before it peters out, or just suddenly slams into a beick wall with no warning.