I dislike throat mics. Everyone Ive known that has had them has always had transmission problems: they always sound garbled or far away. Standing around in a quiet environment they work well, but as soon as you start moving around, breathing heavily, etc, they always sound garbled. Plus they had to talk loudly, whispering was out of the question.
Plus, its something that's wrapped around your neck, so it makes breathing that much more labored. Just get a nice headset mic, or if you hate those, then get a lapel or wrist mic.
Its gimmicky technology that unless you spend a lot of money on it, will never live up to your expectations.