I don't really want to reveal this, but I rarely take mine out of the car. It really is a hassle, and quite dorky if you ask me. Ok maybe when I am at home it makes more sense, but I ain't lugging that thing into a restaurant, movie theater, or similar.
Now, considering there are no more spare VFDs available, I think LEAVING it in the care is more prudent(for me at least), as it can't be DROPPED if it isn't removed. I think eventually I will drop mine if I take it out every day.
Plus, even though it is in my dash, nobody(riff-raff) would know it, and the only stereo they would see is my car's stock stereo which acts as my CD player/radio.
Still I understand some people don't have that option, so it is a catch 22. To me though no piece of electronic equipment is so sacred to alter my way of life while NOT enjoying it..
-John M