When using the Cutout tool, keyframe effects should be applied to both sculpts
When cloning objects, the clone will also be affected by any keyframes that affected the object it was cloned from. It would be useful if using the cutout tool had the same effect as cloning and then cropping in preserving the keyframe effects.
Interesting idea... So how would things like transforms work with this? Like, the new sculpt would have a completely different transform so that may mess up?