You would have to set up a Playback Template for a full orchestra using suitable expression maps and endpoints for Synchron-ized SE. This needs to be done once. Thereafter you swap between the two by simply applying the other Playback Template.
(You can test how this would work in practice simply by swapping a project between NP and HSSE+HSO Templates, which already exist in the factory setup)
Fortunately, VSL already provides that. Assuming you installed the the installation from VSL, just go to the Play menu, choose Playback Template, and select the one for VSL SE. That’s all there is to it.