It looks like you have to be a member to view it - any chance of posting a one liner as to what the offer is then i'll decide if its worth registering or not.
Sorry to be negative but with 10+ people this is not going to be a custom map with or without the rr so i'm assuming it's going to be a generic type map developed by RS which is the same one that Angelworks use which tbh was not really worth what i paid.
I'm getting the same feeling Julz - although Paul has now said he'll throw in a RR session if 5 sign up it's still going to be an off the shelf map not a custom map.