I don't think we disagree at all Alan,,
I guess I didn't take it too just a middle grit range stone... Although I am seeing more and more posts like yours that are talking about an Escher, Thuringen or Charnley Forest after a Coticule ...
Personally I have a great Coticule, and I like, the smoothness that it gives as a finisher on Sheffield steel... I don't much use mine for many other razors, but on those it is hard to beat...