We adopted it a year ago and the team still quite likes it. Reduced day to day stress and distractions and a good structure and shared vocabulary. Wouldn’t say it’s perfect but much nicer than the sprint treadmill.
We just started using it and I am pretty happy that it keeps PM (me) really shaping things with a fat marker to farm for dissent early on without distracting devs in endless meetings. So sharing vision and customer problems early is great.
What miss is (maybe its me): How do you get into that execution mode from there? Break it down? High level estimates? How do get started (especially large endeavors that would be more than 6weeks)?