Duration based exercises used to give haptic feedback when the exercise was complete. That was one of my favorite features of Bevel's workouts (although a more unique vibration would have been nice so not to confuse it with other notifications). Forany exercises I can not see my wrist while on duration based.
Additionally, it always says the planned time when I get to the save screen, but it then saves the actual time to my phone. Ideally, it would have two buttons on this screen: save actual time or save planned time so that both types of users can get what they want. Often, after I release an exercise, it takes a moment to get to stopping my watch.