It was notable that on the trial I attended on 31 January, there was hardly any baggage involvement. You could, I suppose, say it was authentic: I checked in a bag and never saw it again!
The tags put on the bags at check-in looked like the usual barcode tags, rather than the RFID-chip tags that I've read about. There was no trialling of obtaining baggage on arrival, so the impression given was that the baggage system wasn't yet ready. Perhaps it was "completed" too late for full trialling and testing.
Having said that, I was impressed by T5 as a building, and was looking forward to a real flight from there. But after today ....