@bjarque nice and simple - thanks for this idea!
I think now that lens and DOF can be implemented by choosing a “Camera” projection policy in the nDisplay config / Cluster / Node / Viewport settings and then assigning the CineCamera to be the primary cam in the ICVFXCamera settings in the Details panel of the main editor. Then You can simply use the Post Process of the CineCamera Actor for DOF and lens…
This should really be better documented in the nDisplay Manual - the Projection Policy is a fundamental setting which changes the way the whole plugin works and is used in various scenarios.