As many others have said, I also thank you for doing the tests--especially when considering you have health issues.
The only other experience with S110V is my Phil Wilson and that made me order two MT18's (for the record, I sold one of my MT18's to a knife-loving buddy for the same price as I paid). I have had a Native 5 in S110V on order but do not have it yet. I sharpened the MT18 tonight on my Wicked Edge and will say it is hard. It doesn't seem to be as hard as the South Fork but it's hard. I re-profiled it to 15°/side and it took a little bit of work.
I have not been as enamored with my MT17 as others have and I believe this is because it's not stainless. I didn't think this would be such a big deal to me (I have a K390 coming from David Williamson) but my MT17 does not like the way I treat her.
Some of Ankerson's posts make me think about sending my MT18 off to be bumped-up to 62-63 RC (my South Fork is 63). I did this with a knife in M390 and was pleased with the results (HT was done by Paul Bos). I was amazed at how little it actually costs to have this service done. Etching is hard to see after HT, though, but this would not bother me at all as I USE my knives and do not buy them for resale.