Diad III I use to just carry with it with no problems... but when we got the IV I kept dropping it... felt kinda awkwardly balanced... So i tried the Diad IV pouch and i liked it, but it would'nt last very long before it started stretching like stated above... I tried the clip and I've never looked back. The clip gets in the way sometimes but I've gotten pretty good at lifting the coat out of the way, or getting arround the seatbelt.
I broke my clip off early one morning and for the next couple stops all day after typing in the name I'd go to hook it back on and drop it. Habbit forming clips= )