The EO1 has long run time, is tough, durable, small and easy to use.
Yes, the beam is ugly, not the brightest thing but enough for mild walking around. Load a lithium AA E2 Energizer into it for 12 to 14 hours of perfectly flat regulated run time and attach it to something that needs light. Maybe the bag that your tent goes into, just hook it to the zipper.
The light runs the LED at spec, regulation is ruler flat and it tail stands. It was what I wanted my Arc AAA to be but that never happened. I've been beating mine for 18 months as part time keychain light and it works well.
I wished Fenix would get a nicer LED for it but it was chosen for brightness and long run times. Other great LED AAA lights are the Peak series with Luxeon Rebel and 4sevens Preon with XP-G LEDs. They do cost in the 40 to $55 range but you have many more options.