Discussing R3D workflow with many "post houses" is almost a lost cause. Most of them are so frickin' cheap and lazy they don't want to take the extra 5 minutes to establish a workflow or pipeline for dealing with RAW. They actually turn away potential clients and work if they are unable to convince people that their established pipeline for 2K/1080p ProRes / DNxHD or whatever is more than good enough. And it's not just anti-RED, many don't like working with ARRI RAW either. Even though it takes far less CPU power as its lower resolution and not wavelet compressed -- they don't like dealing with the storage requirements for uncompressed 3K oddball resolution.
What these guys haven't figured out is that they're about to be cannibalized from the low end of the market. The Reduser 4K competition showed this loud and clear. Indies and small boutiques don't need separate post house facilities to get the results they want and to grade and finish their productions in 4K. Only a matter of time before small boutiques handle all their post in-house. A lot more is going to shift when CS6 drops on the 7th. Just watch... Improved performance and workflow. Newer, faster workstations hitting the market right now, Resolve and SpeedGrade are essentially FREE. Post houses are going to have to find a way to add value to their services. Being complacent and lazy about RAW workflow or handling 4K+ resolutions is not going to help them on the path to success.