It is intended as an alternative to using USB to transfer the files to/from the offline computer.

The PI would be setup with Armory and the ethernet transfer program.  After that, the only thing the offline computer needs to do is offline signing.

I am also thinking about setting up the PI with a 50MB RAM drive as Armory's data directory.  This means that all saved files from Armory are reset after each powerup.

The process would be

- create unsigned tx on PC
- disconnect PC from internet
- connect PC to PI via ethernet
- upload unsigned transaction via ethernet transfer (PC - PI)
-- save in RAM drive
- start Armory on PI
- restore wallet from paper backup fragments to RAM drive
- sign transactions
- download signed transactions via ethernet transfer (PI - PC)
- check signed transaction on PC
- disconnect PI from PC
- connect PC to internet
- broadcast signed transactions