"Luck"? I don't think so, but any show about degenerate gamblers has to have a short, bald New York guy. He was on another David Milch show, "John from Cincinnati."
I don't want to jump on the "Everybody I hate is gay" wagon, but Garson played a gay character even though he was straight in real life (unless he was gay and playing straight in real life -- it's hard to tell).