Thanks, folks. This is all useful stuff.
I'm not sure one way or the other about this "huge" difference between f/w and rotary. Helicopters certainly take longer to learn in the early stages, but does this make any difference as to overload when using the radio? I'm not sure.
Do we have any rotary PPLs who can comment? Or people who've learned both, but more recently than I have? Though the problem with that is, when you come to the second PPL, radio use is familiar anyway.
Keep 'em coming.