I use the lizard litter walnut shells also. On most of my brass I resize with a redding body die which leaves the primer in then tumble in the walnut shells. Next I neck size with a lee collet die which deprimes them so no media stuck in the flash hole.
I though about the SS pin route but can't see going to all the trouble of drying cases for something that's purely cosmetic. If there was some functional advantage to it I might do it, but not just to get it a bit shinier.