Multiscreen + Projector?

how can i combine the functionality of the Projector and the Multiscreen nodes?
I have a multi projector setup on a 3d object, so I am using the projector node to setup each beamer, but I miss the soft edge functionality of the Multiscreen node.
As far as I can tell spatial-edge-blend-shader seems to be a possible answer and I am looking into it, but I d like to know what are other options.

Seems like connecting the Projector node transformation matrices (view and projection) into each of the final renderers and selecting the proper transformation index is all to it…
I ll have to see this in action …