I don't know if you are the only person or not but I don't think it either conceited or obnoxious. It gives folks a chance to hear a state of the art system in surroundings which are not subject to the maelstrom of noise in the main booth arena. I went to the Can Jam in London last year and the main area was very noisy at times which made critical listening with open back headphones quite difficult. Sonoma , Smyth Realiser and Sennheiser HE1 all had rooms upstairs which were an oasis of calm but I found none of them to be conceited or obnoxious........quite the opposite. Of course if you are offended by Sennheiser or Sonoma or Smyth you don't have to visit.