specify what meshes get rendered to which view targets?

Hi All,
Is there a way to make it so I can filter which actors / meshes get rendered to which view targets? So say I have two cameras A and B, and two objects 1 and 2. I want 1 and 2 to render to A, but only 1 to render to B. How would I achieve this?
Thanks,
Nik

Hi nihonnik, did you make any progress on this? I have a half-solution which could help you/be improved by your suggestion.