The company rep' said that they ran out of wool and had to go with a blend. I'd predict that the grey will be a blend soon. It's already backordered from people who can't get the blue one. The grey's nice, but I'm sure that (if it was as available), most people would rather have the blue because of the movie connect. After all, if it weren't for the movie, no one would be buying the coat.
You were precient, VinnyMac. The Billy Reid site now says all the charcoal coat sizes are on backorder and lists them as being a 90/10 blend.