AP didn't get their AP escapement to function so well, hopefully Breguet will have more success. The 7727 works beautifully, so there's hope.
Having said that, Breguet did have a magnetically actuated minute repeater which they announced but didn't quite sell due to issues. Maybe in the future we'll see an updated version.
Could you ask your contact about any updates or further statements on
Project XB5.0? Maybe ask if you could see their progress?