I can tell you that for the first time in my entire shooting life... a very long time, I had the need for one. At a blackpowder shoot this past spring, I had a stuck ball. I couldn't finish seating the ball, and neither could my brother. We tried a couple of things as well as some stern finger wagging and muttering under our breath (thought cussing).
We had the extreme good fortune to be shooting the trail walk with Grey Whiskers. He produced one of those gizmos from his bag. And two squirts later, my barrel was cleared. I was able to finish the trail walk thanks to him. It made a believer out of me. It is cheap insurance, and saved my weekend of shooting.
I just ordered one from Cabela's. I also ordered the adapter kit instead of the single adapter. I want to be prepared for someone who might have the same problem I had. Sort of pay it forward. So, I can assist someone no matter the type of ignition system. I hope it will never come to pass, but when I needed a bit of help, Grey Whiskers was there with the answer.
Grey Whiskers, if you read this, thanks again. :thumbsup: