Duplicate Face sets in sculpt mode

I'm sculpting with separate objects for example with separate muscules objects on body using simple deformed spheres remeshed . This is way simpler to sculpt complex shapes and fast with great sharp edges between parts. If I want make this I need duplicate in edit mode or in object mode and move it to place and then go to sculpt mode and make separate face sets from lose parts and then reshape this mesh.

way faster will be to use operator - duplicate separate color face sets in sculpt mode and move on different place and sculpt it to different shape in the same mode.