I haven't used the Simmons but have read the recent sharpening threads.
I was in Wally World yesterday,looking at kitchen knives and saw a diamond sharpener,made by Smith,that I wish you guys would look at.It might be just the ticket for the Simmons.
It is has a handle like a butcher's steel,the "steel" part is 8" long by 5/8" wide but instead of being round in cross section,it is shaped like a half-round file on both sides.
The diamond surface is perforated like other Smith,diamond stones and I'm not sure but a handy person might even be able to drill into the end,install a rod and use it with the KME system.I couldn't find what grit it is.
Anyway,as soon as I saw it I thought of the Simmons discussion and would be interested to see what you guys think.maybe Smith's has a site that shows it?