@decktonic These are great backup/travel phones. I have something similar when I travel, swap simps and keep "home" SIM to receive calls/sms. Alternatively, this is a phone I would take with me on trips/adventures/boats when it would be easy to loose but need a phone for emergencies.
If this thing had GPS It would be a strong candidate for my next purchase. As it is, Twitter, Email and Navigation are the main things I use on my phone.