For those owning the 7+, 8+, how often do you use the portrait mode? When Apple showcased it on their keynote, this feature does look interesting. But then in reality, I wonder how often do people actually use this feature, especially since it's only available for the rear camera on the 7+ and 8+. It would make more sense to have it on the front facing camera (which the X does) for portrait selfies, but even then, do people actually use it often? Also, Apple said the software will keep learning and do better bokeh as time progresses. How is this improvement be released? Is it only improved when there's an iOS update?