Yes I have and find they work fine. However I just use Coin Star machines for converting my clad into paper money.
You clean silver and nickel in the blue aggregate and the copper, bronze and brass in the red aggregate. Ground up corn husks will put a shiny coat on the coins afterwards. However you must be sure not to include any key dates to the mix or you'll de-grade them.
You can get this Magic Tumble Clean at FINCH PRODUCTS, P.O. 213, BIRCH RUN, MI. 48415 (Call toll free) (888) 624-2646