With my set, I haven't gotten much use out of the coarse AlOx or the soft Arkansas. Both of those seem to shed a lot of grit in use, with not much improvement in edge quality. Haven't found any blades that respond well to these stones.
David[/QUOTE]
I've used an identical setup bought 30+ years ago to sharpen more knives than I can remember. The blades were anything up to 440-c Bucks and others, 154CM, and ats-34. I never used the alumox-way too coarse. Substituted a two-sided coarse/fine no-name alumox. For high-carbon steels in the 10XX range, the soft Arkansas made a fine finishing edge for kitchen work(bevel set on alumox). For the stainless knives and for harder heat-treated carbon steels as well, the Soft Ark. smoothed out the scratches and prepared the edges nicely for a finished edge on the white Hard Ark. For a knife meant to be used, I can't see needing anything much more until you tackle the newer, high-wear, super carbide steels. If there's any need to.
Oh, and after several thousand edges produced, I still use them. Not noticeably thinner; don't need leveling.