I did mine as a 1-day crammer with a senior ATCO. As a glider pilot rather than GA I found the practical unnerving - by the end I was like a rabbit in headlights and about to fall apart. Breezed the written paper but I'm good at that sort of thing. Found an incorrect answer while I was about it.
I didn't get to make a MAYDAY or PAN PAN - I got to relay a MAYDAY.
I got the licence on the grounds it will never get easier, and whilst an RT licence currently is required for glider pilots it might be in the future, and it might be useful in the meantime. However I need to find a way of practising it and as someone who avoids CAS like the plague....
Someone who did it the year before me said that if you get told about conflicting traffic and asked if you can see it, saying no is the prelude to getting bombarded with instructions to deconflict the two of you! Easier to say yes. Of course don't do that the real world unless you really can see it.