I can't remember his name for the life of me (Mothership you might remember) but there was this Elvis impersonator in Portland back in the 90s who did something similar to this, and I'm not thinking of Jesus Presley or the "honk if you love elvis guy".. it was a dirty show and they usually played at Satyricon so I never got to see them.. :(
Not the old toothless Saturday Market busker with the cardboard guitar? Cause if this is the same guy he was there in the 80s too. My mom sold at the market so I pretty much grew up there.
http://www.youtube.com/watch?v=SS4_hplNY8k
Other than that I got nuthin. Was the guy you're thinking of affiliated with the Church of Elvis?
Oh that guy! Holy shit I haven't been to Saturday Market in forever. This was more mid 90s.. It was kind of raunchy Elvis covers. He was on an episode of the Spagg show, or maybe it was the Chess Show..
Man, Church of Elvis, Spagg and the Chess Show.. all gone :(