I am thinking about getting the 2nd controller for smoother shots.
Is it worth it?
Can a second operator move the camera smooth enough and slow enough to make it look reasonably cinematic or is too jerky??
Gains and stick definitions are all adjustable on the second controller. Yes you can get some very smooth camera movement.
I have found though that setting the gains too low (ie 30/40) limits those moments when a fast tracking movement is needed (pan flyby for example).
So it's a matter of feathering the camera controls back to center (never snap to center), and practicing smooth use of sticks for best results.
Oh, and constant communication between pilot and camera operator. If you aren't talking constantly, you're probably wasting good shots.