It's been a few years since I did mugs, but they came out great. I believe Artanium was the ink brand, and they supplied the profiles. They came out great, really, but they are tedious. I have a Knight mug press, and immediately after taking it out of the press, immersed it in a bucket of lukewarm water to cool it down to prevent off gassing before you can peel the paper. It took quite a while to do a dozen mugs, couldn't possibly charge enough, but people do it, probably on a much larger scale, possibly with oven wraps and a lab oven to increase the production. As I said, they do come out great. Mousepads are also pretty easy, especially bleed offs. Like Homer shipping mugs can be a bear.
Steve