How strict are the requirements?

[mayor of now]

The Steam system requirements currently include 16GB RAM and 8GB VRAM. I know Android is more efficient than Windows, but those seem steep for a game that also ships on the Quest.

I've got a Z1 Extreme (780m) with 16GB shared between the CPU and GPU. So far, that's been enough to play Alyx and Talos in VR. It's much beefier than a Quest, but still below the minimum listed requirements for Metro on Steam.

I appreciate that the Oculus version is crossbuy, but I'd prefer to build my library in Steam for future portability.

Do I really need so much higher specs than the 6GB Quest to make the Steam version worthwhile?

[mayor of now]

And as a potential follow up, does the Oculus Rift version include OpenXR, so you can launch it over Steam Link, or do I need to buy from Steam for that?