Definitely. Those switches rely on the fact that when depressed, the springs exist in a highly tensed state and want to push themselves back into an ordinary position. If you keep the springs in that state for too long, the stress on the metal will slowly cause them to lose that tension. Given enough time, it would probably kill the switch.
Oh, and Model Ms don't like to be shrink wrapped. Can't remember why though, but it screws with them big time.