Easily attached and adjusted, just takes a minute or so to install. Can be easily rotated out of field of view.
I use mine for backup (or primary GPS), for taking pictures and videos, listening to music via Bluetooth, etc.. With the remote controller also available on this site, you can start/stop video filming without touching the iphone. Also can start/stop music, adjust volume, mute, and more. Using facetime, you can reverse and let your family/friends see what your seeing.