I have a Washita but don't use it that much. A well worn-in fine India and a charged strop do it for me.that's when I still had all my hair!
Thing is though - back then we were sharpening perfectly well and just as quickly as any of the slaves to modern sharpening.
Probably quicker in fact.
Nothing new has been discovered or invented except the commercial potential of dubious gadgets!
Back then it was more about dubious magic spells and witchcraft. Waste of money - bin there dunnit, plus ça change!