Re: Power efficiency difference
"there are a few trades and professions that benefit from it"
Those trades and professions are not likely to be relying on a smartphone display for business critical colour accuracy. In fact I can't think of any trade or profession who would proof something on a smartphone that would require *that* level of colour accuracy and a decent non-10bit display would work just as well.
Could you imagine the conversation "The colours are slightly off brand"..."That's impossible, I used my iPhone to visually confirm they were correct"