Removed .usdz files mean that testing the assets in AR and Apple platforms is now much harder

[hybridherbst]

I see that ~2 weeks ago the USDZs disappeared; previously I was able to go to this repo, download a USDZ and use that in Keynote, Freeform, QuickLook, web usd viewers, ...

Now I can't, which is a shame and makes using the assets for testing purposes hard again (need to download them, convert them, figure out a way to bring them back to the device I wanted to originally test on, etc)

I'd love to have them back.

[echadwick-artist]

Echoing this sentiment.

There are some USDz files here, but they are animation-centric.
https://github.com/usd-wg/assets/tree/main/test_assets/USDZ/documentation

I'm trying to figure out which iOS/MacOS renderers support which material features, and RealityConverter isn't able to create good unit tests, like converting SpecularTest from the glTF Sample Assets repo:

For example, I'm trying to see which Apple renderers support useSpecularWorkflow . It seems from Apple docs that only Storm supports it?