The trouble I have with digital compact camera's is the fact that they are to small for my big hands. You have to hold it gently with thumb and indexfinger and gently push the button without moving the camera about. A bigger camera (digital or analog) has more grip, more ergonomic. With cine camera's you want to have a bigger box to hold on to, in order to make a steady shot.
The shoulder stock would work in giving a more steadier shot. For zoom still camera's, a rifle stock would be handy.
@Dan Fromm, are digital still camera's with HD cine ability, equal to digital cine camera's?