I know a few people who have an option for the Red camera and I hope to shoot the first short by the end of this year.
The one thing to consider is that it is not enough if you just rent the camera. You will need a proven solution to get all the footage safe to the editing room. Producers and camera assistants are used to a film and a tape workflow. Only very few have experience in a tapeless workflow. I have worked as a 1st AC on a feature film that was shot in the Panasonic P2 format and we have gained some valuable experience, although there was much less data than you will have with the red one. P2 is 1 GB/min.
I made a list of equipment for a feature length movie where you are on a location that has power and plan to deliver your material to the editor at the end of each day.
1 MacBook Pro.
2-3 portable harddrives with 2 HDs each in a RAID-1 configuration. FW-800
1 solution to download footage "in the field". (Compare to P2 store)
1 X-Serve RAID 4TB. Raid 10 or 0+1 (Usable disk space 2TB)
1 Apple RAID emergency packet for immediate repairs
1 Fibre Channel PCI card
1 UPC power station
1 Power Book G4 with SCSI interface card
1 LTO or DLT streamer (alt. with Gigabit interface)
I spent a lot of resources on a redundant storage all the way through. I had discussions with another editor if this wasn't a waste of money. From my experience time is the most precious thing during production.
I think producers who have a due date for their film rather spend a little bit more money on equipment than to reserve an additional two days for emergency recovery and restoring data in case of a HD crash.