Having had a regular Hibreak since last August, I would like to caution about the build quality: in those 8 months, the display adhesive is progressively getting off and I'm not sure how much longer this'll live...
That's likely my next device! I have a palma 2 and a unihertz Jellystar as my main phone. Might be a good merge of the 2. Phone + e-ink to help with phone over usage.