What total BS
The time you take to complete the course will depend, as ever, on:
a) Your own ability; and
b) How often you can do the training - in this respect possibly more importantly than the PPL.
I did mine in 15 hours plus test, as have many other people I know.
My suggestion would be to do the course, plus back it up with any of the PC based radio aids tutors that are available (a damn sight cheaper than 10 hours in a sim).
Where are you thinking of doing it?