Awesome experience ! Made a recording in office with it using scrcpy app running on laptop that the Quest was connected to. Easier than holding camera to lens but Quest needs to be connected to the laptop though.
Also co-incidentally, I'm currently working on this for a Halloween Game Jam at work where I also wanted to do something with AR Passthrough but I picked cute over horror :-)
Let me know if you'd like to collaborate on something in this space together :-)