Yep, it's what I use. My SS4 is now so sharp I've ordered kydex from LF! The only downsides are..

1 You destroy the convex edge (no practical problem for me so far)
2 It squashes patches of the black coat flat (cosmetic damage only, and these knives are users!!)

I'd recommend them, don't get the deluxe though waste of money. Get the one with the three basic stones and the triangular one for serrations.