Preordered my Pico 4 from Amazon UK and received it in the US yesterday. To finish the setup I sideloaded the Pico Assistant onto a separate Android device and successfully entered PayPal in the app for in-headset purchases in the Pico store. My old headset is an Oculus Go, so I can't compare it to the Quest 2. To have maximum field of vision I left the spacer out of the Pico 4, which seems fine.
One advantage to the Pico 4 is the ability to play videos from the USB port, giving viewers an alternative to transferring videos onto the headset or streaming. I use a micro SD card with previously-saved videos, placed in a card reader, attached to USB-C dongle. The dongle-dangle only weighs about 20g (less than an ounce). So far I've had no problem viewing any of the previously-saved videos I've tried. This is what my dongle-dangle looks like.
![https://i.imgur.com/NQmYEoq.png]