I just recently got an eink phone to focus more and work/do stuff in sunlight (always sunny here); samsung and iPhone kept overheating and are barely readable in some cases, even just having a coffee in the morning. It really helps focus on just spending my time in the terminal or in chat for instance and, while it actually really nice to work in one app, switching sucks so it works well. I could not have it as my only device, but next to an iPhone or android, it is been great so far.