I recognize that people may be nervious of some breeds, but for myself, they'd be indoor hearing dogs. You've got to understand though that you just can't win. Some people are afraid of the most gentle of dogs just because they have a fear of the animal so don't let that be the main factor in choosing a dog. The most imporant consideration is how they relate to you and the task at hand. Outdoor dogs will have a harder time given that many stores or restaurants still don't fully recognize service animals....which needs to change.