Yeah, I run into that all the time! When I sat in with a performer after work one night (I'm a chef at a restaurant that has live music), he actually kept choosing country-esque material. I don't think people realize that the mandolin is versatile, even my bandmates were surprised that I wanted to play mandolin on our blues tunes.
Hopefully, if enough mandophiles keep playing jazz/blues/rock/polka on the little powerhouses people will realize the nature of the instrument!
1984 Flatiron A5-2
1930 (?) Regal Tenor
Toil without song is like a weary journey without an end.
H. P. Lovecraft