Yep... I returned my P3S ... The workflow is just not there yet in my opinion (regarding using the Push as a standalone tool, even when tethered to a computer). Plus, the buttons are so stiff and not consistently (some are stiff and hard to push and some aren't so much), it made it really frustrating to use.
I know all this is beyond just lacking an arrangement view or follow-actions, but not having those capabilities for me required me to be at a computer anyway, so, it really wasn't solving anything. If it had an arrangement view and could actually be fully used as a composing tool standalone (like the Maschine+), I probably would have kept it.
Anyway... I don't see any of this changing any time soon. So, I'm fine with using an APC64 and the mouse/keyboard/monitor.