I totally understand ChinMusic, and I agree....my point being, I don't care what method someone uses, we as responsible adults need to be dang sure we know where we are....just simply stating to a 911 operator, I am on the AT and I need help may delay that help getting to you in a timely manner....
I have served my time in the USMC and one of my other hobbies is cave diving ......I personally don't believe in putting all of my faith in one device/method....the whole two is one, one is none mentality....