Here is a silverpoint drawing of a cat on Canson pastel Touch paper. This paper feels as a fine grain sandpaper.
Silverpoint is a very interesting tool. the drawing does not smudge, but in some cases can be erased with vinyl eraser. The mark on a paper is actual silver which makes it even more precious drawing. Another great paper to try for silverpoint is Terraskin. it is made out of calcium carbonate with a bit of resin. one can search the name stone paper to view other brands of such drawing support.