Having the notification list is great on the Ionic, however if I'm on my phone already I do not look at the notification on the fitbit. When I finally do, if I wish to clear them it's either a one by one swipe, or a long scroll back to the top. If the button were at the bottom of the list (but slightly out of view) you could scroll up to select the clear all, or continue the full swipe to close the notification window as per usual