Signature released the update for Gianni to version 5.0 in February of 2020. After using it for some time I have found no problems or issues with this update. There is also a corresponding update to the Geralt to version 1.5

These updates unify the Bakes on Mesh and applier versions of the body into one dual purpose body. You can enable Bakes on Mesh via the Signature HUD “Bakes on Mesh” button. That ‘button’ is highlighted in yellow in the following image.

To disable Bakes on Mesh (BoM) you can simply use any Omega compatible applier or the built in skins of the HUD on the body to revert it to the applier mode.