Some people have figgered out a way to use cell phones as radios, so "curious ears" can't pinpoint who is saying what, and I believe there's also a way to encrypt your transmissions while using this method. Buddy of mine sent me a video, I'll try to find a link. You type your message in a text and it's received as a text, but somehow over the radio waves?? I think?
I agree. To specify, we mostly use them while we're in two separate vehicles traveling to a spot. It's much easier than stopping every time you need to say something to each other.