My biggest learning curve is going to be the camera. I really liked that on P the 9 Pureview the images were processing a bit faster. On 10 it's on some molasses type ****. Normally, it doesn't bother me as I take pictures on the slower side anyway (I like to set up the shot vs doing the quick snap business). Even so, I do multiple takes and this is where the slower processing speed of the 9 Pureview just kills it for me. Maybe there's another update coming where if it processes st the speed I saw on 9 to make it more usable for me.
Could I still use it as a daily driver substitute? Yes, based on my current usage. I'm not out there snapping pictures all the time. It's just a real concept phone that got to market. I'd need to upgrade my wireless headphones or get those Sony USB-C ones to test out.