Unfortunately, it turned out that the idiot at BMW promised a whole lot but never waited back! This is the strangest behavior I have ever encountered at a car dealership.
I then switched to Mercedes and got my car about 8 days later. It was one they had standing but stuffed with the latest equipment.
I have ordered a quote to get it into Switzerland and it costs around 9500 euros extra, so that's what I'll do when I'm ready in a short while.