I put a utility edge on my SAK's which works for the light cutting I expect of it. While they will dull quicker than one of the premier steels, I think of the main blade on any multi-tool -- SAK's included -- as a back-up. I'll have a primary folding knife in S30V, 154CM, D-2 or even a fixed blade to use for heavier tasks. Heck, even my Leatherman Charge TTi has an S30V blade which I consider a back-up. The ergos are wrong for it to be considered a primary sharp.

BTW, for those interested, Victorinox uses the same steel for all their tools/blades, only the heat treatment changes.
SAK Inox has: 0.52 carbon, 0.45 Manganese, 0.6 Silicon, 15 Chromium, 0.5 Molybdenum -- Sorta kinda similar to 425. IIRC, $.02