It arrived today, and it was fitted within 2 hours.
I used everything in the box, microphone, gps unit and I also plugged in the 4g unit in case I ever need it.
All set up to automatically use nova launcher on startup. Internet radio setup via automatic hotspot on my mobile.
GPS signal is really good, the supplied microphone is as good as the original Honda one. I put mine just under the headlining.
The GPS unit is fitted under under where the rain sensor is etc.
The only problem I encountered was that bloody tight screw right underneath. In the end I used a 8mm socket to undo it. And it was also a bit confusing at first figuring out which of those small square connectors went, and realizing I had to unplug the airbag light and just wire it back up and shove it behind the radio.

But I'm well chuffed with it. Feels so modern now, not even bothered with car play/ android auto as it's pretty pointless. Everything is easier straight on the head unit. I can even skip radio internet channels from steering wheel etc.