This looks fantastic. The only negative I see so far it is only monochrome passthrough. The full color passthrough on the Quest 3 is pretty killer, it sucks to go backwards on that.
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Eh, I don't use it for augmented reality a TON, but there are some fun apps that my kids and I like to use that use the passthrough for augmented reality... one is a virtual aquarium thing where you can draw 'windows' on your wall that become a window to the ocean, with things swimming around. It is pretty cool.
I mostly use it, though, for short term moving around things, like to pick up something in the real world or to figure out where I am. I guess that can work in monotone, but it really feels cool in full color.