Interesting! Interesting!
I haven't found the time yet to continue my won trials in this field, but everything Torolf and Dennis have said, seems to point to edge that are a bit too keen.
I have never thought that the fabled Coticule smoothness was the product of some enigmatic and magic property of these hones. At least: not only.

It seems to be that Coticules offer for many the perfect marriage between ample keenness for shaving, but not so much that it easily blemishes the skin and the absence of microscopical,yet acute jaggedness at the very edge.
If you push the keenness barrier, I have little doubt that the edge will become more prone to remove skin cells, more prone to nicks, and more prone to cause ingrown hairs. Likely your shaving style needs to adapt a bit, because the normal Coticule edge is very forgiving to pressure, and can handle the occasional steeper shaving angle very well.
That said, I'm still thrilled, because I was searching this method
not to up the keenness of all Coticule edges, because they already have what I consider to be perfect keenness for shaving, but as an easy tactic for those edges that refuse to bow to the normal routine.
It seems that Dennis' use of wax works better than my use of dry soap, but I don't doubt the effect is basically the same, and that the edges will revert back to "water" smoothness with a few laps on a Coticule covered with only water.
In other words, we might have a failsafe option for those cases where water doesn't
cut it.
And we get this great opportunity to overshoot the keenness and dial it back with a few laps on water to just where we want it.
The only disadvantage is that for practical use, the best option will be to keep a waxed Coticule separate,for that task.
Kind regards,
Bart.