My body appears to be mending so far.
I like the fact that they are offering it as an option but I don't like the app it uses, the navigation software is not accurate enough to be reliable. Eventually maybe it will be, the problem with relying on it is if the phone doesn't work then neither does your navigation.
Those of us who got the TFT enabled 850's are familiar with how it works.
Anyhoo the kit in the image is far better then beemer's handle bar mount design. When I bought the bike I bought a cheap ADV style touring helmet with this massive chin bar that blocks my view of almost everything below the upper region of the windscreen on the bike. To see the TFT i'd have to take my eyes entirely off the road to look down at the handle bar area or TFT.
The street oriented touring helmet (C3 Pro) i'm using now doesn't do this.