That`s right, it was a 300 quid option back then - or was supposed to be, i think i was on the cusp of it being included in the TE spec and was `tricked` into buying it...
I`ve used it once. When i got a puncture and needed recovery. The service i received was efficient and fuss-free.
The speaker on the handlebar mounted doo-dah was excellent but the microphone required me to talk right into it otherwise the call handler had difficulty in hearing what i was saying.