I have a kit that Skyminer build, he is part of my garrison. I started using it back in November, and I would call it game-changing. Being able to hear the sounds around you clearly in stereo from up to 25 ft away, I love it. The mics are small and occupy the smallest open teeth area on the frown. invisible to anyone not looking for them.
There will be some troops where you just don;t want it (say during a symphony performance) but for most events, cons and the like, not having to say HUH? all the time is great.
I loved it so much I put a 2nd kit in my Tusken.