I have no experience with that plant, but I would refer you to a highly recommended book by Kapitany and Schulz called Succulents: Propagation. In that book they describe S. mandraliscae (now apparently a variety of Curio talinoides) as "low strike rate" when propagating from leaves, which apparently is best done in autumn or winter, and "Leaves grow roots but seldom produce plantlets". There's apparently another "blue chalk sticks" called C. repens about which they say nothing.
So try it and keep your expectations low.