I'd say there's a bike difference between not wanting to take the bike off the trainer and not being able because of an injury.

I ask the people at the LBS things all the time. Sometimes I suspect I'm being annoying or high maintenance. But they never appear annoyed, and they are always helpful. Many of them know me by name. If they see me looking at merchandise, they come over and ask if I need help. But then, that's why I go out of my way to shop there, when other stores are closer -- their service is great.