NeilBlanchard -
I have Airtabs. I was worried that I wouldn't like the aesthetics either, so I made them reversible. I used business card magnets :
Then I put a strategic Neodymium magnet in the interior volume :
I haven't lost one since I installed them in March. I only take them off if I am going to wash the car. If I do lose any/all of them, I will probably get more and make them permanent because now I "like" the look.
CarloSW2