My DH has one but doesn't use it very often. I think it's something he would like to do more, but he is trying to make up for lost time. Too many things to do!
He got it out to take on his trip out to Colorado, but decided not to take it. He did a little panning for gold, but found none. Drat! I was ready to retire on the big "strike it rich" vein he didn't find.
(Oh, yeah, I'm already retired.)