UK Expat,
You and I have made the same purchase - headlight and two taillights.
I've only ridden twice with the lights. I have an Edge 1000. I had the remote on the handlebars, but I took it off after today's ride, because it doesn't do anything I can't do from the Edge. (Granted, it may be faster to signal a turn using the remote, but so far, I can only make the left turn signal work from the remote.)
I've had a taillight (Monday) and the headlight (Tuesday) disconnect from the light network. Otherwise, things seem to work pretty well. I'd love to have someone verify that the "brake lights" work.
How are things working for you?