Jumping between different version of the same models, solved with multi model version texturing

Normally, when texturing a model, such as a character, you would have to import multiple versions of the same model in order to texture hard-to-reach areas.
So, for example, the main model would have eyes open and a version with the eyes closed so that you could texture the eyelids.

So here's my suggestion:

If Substance Painter could have a feature where you could import all the versions of the model at the same time but be able to switch between them as you work depending on what you need to work on without the tedious back and forth of importing and updating textures.

This could also work for;
Vehicles, where we need to work on exploded models to texture individual parts and bake an AO map before returning to the assembled version for full texturing.
High Poly and Low Polys.

The possibility to see your textures update in realtime across different versions of the same model would greatly speed up the production pipeline and make for a more efficient workflow without the constant back and forth.