Really nice home for your scratchstock. All of mine have been caveman style. Old handsaw blades that were too sprung, bent, twisted, or whatever, cut into easy to hold shapes, and filed, ground, and sanded, into whatever shape I wanted them to be in. Then for a while I ran into Anthony and bought a lifetime supply of their scratch stock, card scraper stock, and use them when I needed a new shape. The advantage to cavemen, is the world is your oyster, make any shape you want. A lot harder to hold than yours though.  Mine are also thrown in the bottom of a box, or drawer, not so well displayed or supported as yours.  :-)