You cannot truly sample physical modeling because every note articulation varies. However, you can sample "stabs" and "falls" from the ARX cards and use Kontakt’s Phase Modulation or Wavetable synthesis to fake the behavior.

Roland Cloud does offer the (based on the newer Fantom 6/7/8 series), but these are VST plugins, not Kontakt libraries. They do not contain the specific wave ROM or ARX algorithms of the G6 .

Roland has never released an official Kontakt library of the Fantom G6. Roland is a hardware manufacturer (and now a cloud-based subcription service via Roland Cloud ). They view Kontakt as a competing ecosystem.