In a pocket sheath. It acquires a worn look with few snail trails.
+1. I carry my large 21 in a crk leather pouch. Its feels smoother in the front pockets and does a good job separating itself from the other stuff i side the pockets. Furthermore, when I am at the office, a sebby in a pouch doesn't look intimidating to my colleagues compared to a naked sebby on the work table.