H Peacock. Just wanted to clarify a few points!
Radar Advisory Service is where the aircraft recieve warnings and avoiding action information from other aircraft. The pilot is not obliged to take that action. They certainly cannot be cleared to below a radar vector chart. To do so would relegate them to FIS.
Radar Information Service is where the pilot recieves information only on other aircraft and takes his own avoiding action. Again, they cannot be cleared under the RVC as this would take them down to a FIS.
and no, '...responsible for own terrain clearance...' has most certainly not been taken out of the book and should be given everytime by ATC especially in Class G airspace.
hope that clarifies that!