This is my current bulk fill protocol. This is 31 Occlusal with Clean and Boost, Superb and Titan Flowable A2 co-cured with my Valo light set to XTRA POWER (3200mW/cm2), then Exquisite.
So far this technique is only for Exquisite. Don't know what'll happen with other materials, but I suspect the dreaded white lines and/or sensitivity. Maybe some of the new bulk fills will work, but none of them will hold up to occlusal forces for long as we've already seen.