CFExpress Type B Storage for Hasselblad X2D

re: Announced: Hasselblad X2D-100C with 100 Megapixel Sensor, IBIS, Phase-Detect AF
UPDATE: see Field Use Report: OWC Atlas Pro CFExpress Type B Camera Cards in Hasselblad X2D.
I plan on a thorough review of the Hasselblad X2D 100C and at least the Hasselblad XCD 38mm f/2.5 V and Hasselblad XCD 55mm f/2.5 V. The high prices make it difficult to get loaner gear (budgetary limits) but it looks I should have this system next week. Many thanks to B&H Photo—please give them your business. If not, I will have to replan. for some other gear.
Storage for Hasselblad X2D
The Hasselblad X2D 100C includes built-in 1TB storage, hyper fast. That might be ample for most users so that they never need to buy a CFExpress Type B storage card.
Except/unless the camera allows duplicate (backup) files to the storage card, a question I’ve posed to Hasselblad, awaiting an answer.
Previously I asked Hasselblad this: “Why is CF Express Type B card limited to 512GB?” I received this strange equivocation instead of a technical response:
The X2D has built-in 1TB SSD storage and the CFexpress card is add-on storage (more than large enough for most users).
...which raises the question: if 512GB is “more than large enough” (true enough), why build twice that into the camera internally, raising the camera cost significantly?
The main thing here is that lacking support for 1TB cards mean there can be no dual-write backup strategy or similar. At least not past 512GB.
I have the OWC Atlas Pro 320GB and 520GB cards, and an OWC Atlas 1TB cards, I can test all three directly. It will be disappointing if the 1TB card does not work.
