First of all, I am military - or was till Jan this year! So not sure about civilian phraseology.
What I don't follow is why controllers are saying the service they are giving is a "limited RAS/RIS". In my view, the service is RAS/RIS but that there is "LIMITED TRAFFIC INFORMATION due to........." . By stating the service, then applying a limitation and giving the reason why, surely that gives the customer a fuller picture.
moony