there’s an experimental option… you can “wrap” the gcode for the 2D vcarve over a 3D shape… even if the 2D shape is a V-carve.
See Test cuts with the newly installed spindle for some of the details.
It’s obviously not an easy click click done kind of process, but impossible it is not… you can either wrap gcode over an STL (which means you need something to make an STL file for the base) or…
use NCNC2NC - javascript edition to use the gcode of the finishing pass from carbide create to overlay the gcode of the vcarve.