As good as they are, I personally think that Inkjet papers which have a glossy surface have a long way to go before they equal traditional silver based papers used in a darkroom. What I find is, where there are areas with little tone because very minute quantities of dye/ink is deposited, they remain very glossy indeed. Whereas areas where there is a heavy deposit they assume a semi gloss appearance, which does get better as the ink/dye completely dries but the difference is still noticable. The effect as described above is not so noticable on surfaces with even a fine a texture but it is still there.
Because silver based traditional paper where the different tones are 'inside' the emulson and not merely on the surface, the gloss finish remains prestine. Even MG1V resin coated glossy cannot even come close to fibre based glossy paper that has undergone hot glazing on a heated flatbed or rotary drum. That finish remains at the top of the pile as far as glossy finish is concerned.