I don't think so. So far, I've only seen 1:1 chats. Even when you add a contact, you can only scan 1 contact address.

As for the rest of your concerns, I'd let the team answer that. 

Also, as promised, here are some screenshots of this app which is currently only available on the mobile version (android or apple)


Current security features are biometrics and a Pincode. You can back up your wallet's Mnemonic code too if you wanted.