Oh man. I pulled it out of the box 5 minutes ago. I already have my eeprom backed up and a new firmware flashed. I'm already impressed.
https://github.com/armel/uv-k5-firmware-custom

Build quantity is great. Solid and heavy. It is smaller than I expected, but that is a plus I think? It fits nicely in my hand, that's for sure. Lighter for scale.
https://i.nostr.build/BR5Ql.jpg