I tried using OF notifications in addition to due dates. However, I could not find a way to see a list of upcoming notifications, as you can with due dates.
And I also could not figure out how to see notifications on Apple Phone and watch. Once you look at an iOS notification of an OF notification, it disappears from iOS. The iOS notifications of OF due dates don’t disappear. Any help here? I’d love to use due dates for when something is actually due :)
Custom notifications can be set on iOS and are coming to Mac in 3.2 (which is, I believe, pretty imminent and is in public beta).
One of the other things I’ve taken to doing is using Estimated Duration in concert with enabling the “Latest Start” notification, which alerts at the due time minus the Estimated Duration. An easy way to set a second notification. 😁