Just wondering what other peoples approaches to keying are (If not using the Character Key Sets).
well, never used them
Before they are introduced, I took a habit to do IK/FK or constraint blend, just across one frame.For example, set key *only* to full FK. One frame later, set full IK, adjusting the local rotation (in AE) in the same time.
This gives a nice transition, as well as visual feedback in the timeline, where switch is.
But this doesn't play nicely with 'set key on everything' concept, provided by character key sets. So, very personal preference was, keyable parameters. Synoptic for complex tasks, for quick setups ( flying cellphones or so), just a careful layout in schematic.