I just saw a post by Seymour Duncan from last year talking about an experiment that they did at Billy Gibbons’ suggestion. They dipped a Pearly Gates pickup into a pickle jar to see if it would work, and it did….so they put it back, and pulled it out from time to time, and it continued to work.
That was back in May 1978, nearly 40 years ago! According to the story, the pickup is still there, and it’s still working. I’m not sure that I’d be rushing to put it on one of my guitars, though!