It was very hard for me to turn on the display while riding my motorcycle. I went from a S4 to a S5 just for the AOD while riding. Another benefit was not giving off a false sense of boredom during meetings when I needed to check the time or a notification. The over gesture of turning on the display can mean losing a raise/promotion.
Sim to JT above my Ultra AOD is turned on in the AM (S7 worn @ nite w/ AOD off) when I put it on as it's useful when on my gravel/road bike or when swimming.