Yeah, tor is already encrypting between each node and since both clients are connecting to the rendezvous point inside of the Tor network it should already theoretically be encrypted E2E... The other crypto is just in case that's not true... why not add other layers of encryption if you can.
No I don't use it it's kinda just a lil hobby. Nice to know I can depoly worldwide anonymous coms from my pocket though.
The install script contains all the pieces needed to be the host server or just a client. Because termux allows you to run multiple sessions, if you are the host, you have to run the server in one session and then connect in a different session.
What's not shown in the screen shot is that if you choose to host, a onion address is generated. This is how other clients connect.
I don't like this.