[Cuki79]

Originally Posted by Warrenaines

On the other hand, if he likes the acoustic sound and removing it is unlikely to change sound, why not just leave it in? Then guitar is the same and pickup is there in event he wants to plug in occasionally, and no time/cost of having pickup removed and choosing and buying a different pickup.

Well he should not forget the battery that could get old... I know that 9v batteries seldom leaks... but they will probably if you wait long enough.