I do the same. I don't see a need for the privacy mode that requires a key on the USB stick in order to start up, since if pulled over, I'd just put the parking sensor USB stick in there and do a quick reprogram.
EDIT: I wish there were some way to lock out the privacy mode, unless a special key combination is entered. A (small) worry of mine is that someone who's rummaging through my car might be able to put my ALP into privacy mode and remove the USB stick, thereby making my ALP useless (for example, what if the car gets towed and the cops want to be evil?).
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