There are a couple of Victorinox sharpeners. A small fine grit stone is included in the SwissChamp SOS set and there is at least one pocket sharpener manufactured by V'nox.

I don't know how feasible it would be to include a sharpener in the knife itself. I'm sure they could find a way, but probably they don't feel it would bump up their sales. After all a lot of Victorinox customers don't ever sharpen their SAKs (I'm pretty sure SAKs are the most popular knife with the no-knife crowd) and us knife nuts have a closet full of sharpeners. <img src="/images/graemlins/smile.gif" alt="" />