The clients I am quoting to want to segregate it from their waste streams for potential use as a boiler fuel source. I don't even have all of the information regarding its use since the processes are experimental and proprietary; I only know they want it as an additional cut.
I would imagine there are problems with chlorine emissions that need to be overcome before it moves into the mainstream sort.

Yes, I have a couple of quotes out to clients that want vinyl included as part of their end result. It could potentially have positive ramifications for the shredder residue waste streams.