In the U.K., he's exotic.
Boy George once said that you could top the charts in England singing "God Save the Queen" with a teapot on your head. They like novelty acts over there. Most disappear after their 15 minutes of fame. Seasick Steve has done a little better; he still gets booked to festivals with some regularity. However, his star is way down after his first 2-3 years of very odd success over there.
I don't doubt it.Did you know he used to be a studio musician in the 80's.