HA, our original pitch was a little kid in a tire swing, but then we saw Slater beautifully executed the exact same idea for the Dead Weather.. so we went with the backflip off of a rope at the quarry.
I wouldnt trip too hard on it.
Its a great looking poster and that's an easy image type to come up by coincidence in the summertime.
Besides I think there's lots of poster guys that use photos from other sources as "models" for their drawings anyway. And this is pretty different from the figure in the Levis ad.
I just saw this, then on another website saw an advertisement from Levis that had the same images of the fella flipping. Love the poster though, looks great. (here's the levis picture just to see what I saw - http://farm7.static.flickr.com/6065/6092835411_db88c7eb45.jpg )