In general, we do not yet know how thick slabs are needed to provide a fully converged description of the SCE and the SCR. We nevertheless expect that GC-DFT calculations with an accurate description of the SCR within standard slab models of SCEs will be prohibitively expensive. We therefore suggest combining GC-DFT with the advanced DFT models to model SCE as an explicit function of the potential. As e.g. quantum continuum models can be used to compute the electrostatic potential across the SCR and in the bulk in, we consider that the use of CIP-DFT with these models will enable accurate GC-DFT simulations of the applied potential in SCEs.