These are also great mics to use on grand pianos. Just use gaff tape to tape it to the underside of a grand piano lid. Make sure you use good gaff tape, casue it's not a happy thing if the mic falls off on the strings during the performance. It may take some experimentation, but finding the right spot for placement on the lid will be pretty apparent.
This is a good solution when you need a low profile on the piano so as to not block a chorus, etc.
The connectors are terrible for a mic that you could probably run over with a car, and the cables are not cheap. I built some bases for ours, a square piece of heavy duty dark foam and then glued a black piece of metal tubing at the right spot for the cable. Run the cable through the tube, and then tape the mic to the base (and base to the floor at the same time) and they're almost actor proof.