Noticed a small scratch on the glass of my XZ today.
It's only a couple of mm long and is not in the way but it's deep enough to be felt clearly if you run a fingernail over it.
No idea what caused it - the only thing I can think of is that it inadvertently got dumped in a pocket with some keys, if keys are hard enough to cause that (I do not know if they are).
Annoyingly there are STILL no cases or screen protectors - or fast chargers - available for this phone from Sony NZ. Why they were not available at launch rather defies logic.