I got Apple's visionOS Simulator streaming wirelessly to a Meta Quest using ALVR.
Download: https://github.com/zhuowei/VisionOSStereoScreenshots/tree/alvr
Demo of using the visionOS Simulator inside VR:
GitHub - zhuowei/VisionOSStereoScreenshots at alvr

Take 3D stereoscopic screenshots in the visionOS emulator. - GitHub - zhuowei/VisionOSStereoScreenshots at alvr

GitHub
@zhuowei For your next trick you could stream the visionOS simulator to an iPad, with transparent background. iPad app overlays it over the camera view and sends coordinates from ARKit back to the simulator 👀
@nicolas17 Sure: I can do that - not sure if it'd be as impactful as seeing it from inside a headset, though...