Yesterday, I bought a battery-operated card shuffler. The thing is a wonder, but before I use it on anything other than a normal deck of cards, I would like to know how these rigs are for wear and tear.
Does anyone know whether these things are better than or worse than hand-shuffling for causing wear on cards?

I have just a cheapo model and it’s a little rough on the kind of cards that appear in most games. Playing cards are usually plastic coated, while most game cards are not. This surface tends to chip or flake a bit on the edges in my shuffler, which has a rubber wheel that spins and flings the cards like a pitching machine.