Thanks guys,
I use Minwax Polycrylic. It's nice because you can put on several coats in a day. I spray it on with a cheap HF spray gun and a make shift spray booth.
Mike
Got a chance to meet Mike and his wife today and to see these in person. The pictures don't do them justice. As I was walking away Mike had a full booth of people and most of the day of the show still to come!
Sorry to bump an old thread, but where do you get the inserts from? The only site I can find by that name is a promotional site, and I'm not sure which mug you get.