Non of my Eco-Drives have ever had a PRI. I know Seiko used to include them in their Kinetics due to their poor charging but I don't see a need on the Citizen. Mine (and my wife's small face one) have never gone into the power saving alternate second advance mode, let alone lost time. This is in the rainy UK where the watch spends half it's time under a shirt cuff in the winter. It seems like a redundant feature, and the button a potential case seal failure point.
If either of our watches is going to be unworn for a long period of time (weeks or more due to wearing a smart watch), they just get left on the window sill, but that almost never happens, I tend to wear mine year round.
Also, if you can live with the looks, Casio do a range of "perfect" watches. I'm wearing one now: it is solar powered, radio-controlled, water resistant to 10 bar, shows analogue and digital time plus date, an alarm, and has a six-band radio which means it will sync to the right time automatically in most parts of the populated world. Oh, and it illuminates at night if I press a button. There's some chronograph nonsense in there but I don't understand that stuff anyway. As with
@Gyro's Eco-Drives, my Casio never get any special consideration to keep them charged up - mine is on my wrist or on my bedside table.
Apart from the looks (which I appreciate are a matter of taste) these watches really are superb. And *very* competitively priced). If they would only do them as dress watches they'd be getting even more of my money.