I'm not a fan of stonewash.One of the best things about SAK's is the mirror finish on stainless blades & tools.
I did tumble some Ti parts in stones to get a stonewashed speckled finish on the gray matte Ti, but even that I wasn't too excited about and don't think I'll bother again.For laughs have a look at my DIY rotary tumbler. Ver 1 and 2. Ver 2 actually worked decent, ver 1 wobbled off and fell.