I have the adapter myself and have had it since the early spring. I believe I’ve used it a total of 5 times to date, three of which were simply for opportunistic reasons. From that comment, you might think that I’d have to think twice about buying it again… but you’d be wrong! It’s not a cheap accessory, but if you find yourself needing it, the cost becomes much less material. I like knowing it’s in the back and ready for use should my route and schedule benefit from it. It certainly was useful on the day I *really* needed it.
I intend to take a few trips into areas that aren’t served well by Superchargers (so far anyway). I expect I’ll be using it more frequently on those journeys.