to be honest, i think the RT element should be incorporated into the skills test. afterall its on the ground school element.
It is incorporated into the JAA Skills Test but that is for the Pilot Licence. The FRTOL is an entirely seperate licence that requires knowledge that you would not nescessarily display in a Skill Test. For 10 years (1989-99) the Skill Test was used as a medium for the practical RT test. In that time two very different standards emerged; those who knew the correct phraseology and those who didn't.
Most people learn their RT from coppying others, unfortunately it is more common to copy the wrong things rather than the right ones, especially if you don't fly very often.
If your RT is good then right down a full Mayday call in the correct order. Now if you get that right, assume that you have just received one, nobody else heard it! Do you know what to do and how to issue an imposition of silence? It could be your shout, it doesn't have to be the ground station.