Rob - no worries mate, do always feel free to ask any more you may have. The aviation world seems to have a nasty habbit of strangling itself with as many rules and regulations as it can think of...
And before anyone gets on their high horse - yes, I completely understand and respect these particular rules and regs.
As regards commercial aircraft in Class G taking a RAS - it's not my field, but I've been told by friends that their operator requires them to take a RAS if available, whatever the weather. Hence the large numbers of them somewhat cheekily (IMHO) working the military area radar frequencies when outside CAS.