The exact way the EIR would work in these situations remains unclear at the moment.
In the simplest scenario, the pilot will be unable to fly an IAP even under total VMC.
But one can also look at it from the Z flight plan POV where the VFR to IFR to VFR transitions are specified (as waypoints) in the flight plan, and during the VFR sections the behaviour expected of the pilot is very clear - VFR. I suspect this is the intended way of working it.