ok, the E5.......
It's a compact little thing and needs only a little adjustment to work on Swisscom - that is the configuration being told to use the APN of gprs.swisscom.ch (or so it seems).
Battery life is around 4 hours - matching the specs. This is fine and you can connect it to a PC USB slot to get more out of it.
Performance is adequate - it actually performs across the technologies better than when my PC had the SIM card installed and was using the Swisscom UDM software to manage the connection.
With 2-3 device connected on my journey through patchy connectivity, it keeps the connection better than expected. That means my Android phone, my Touchpad and my PC can be connected and make use of my generous bandwidth limit
For 115, this is cheaper than taking a new subscription and works as I'd like. No regrets, I recommend it.