You´d have to ask quixel that. They are already doing it with their megascans assets, which obviously start out as highpoly assets. Or you can just look at their assets to see how efficient they are.
The highpoly raw mesh of the gun will still need textures somehow... It cant be vert paint since you'll need multiple channels for different values of specular/roughness/etc. etc. It'll most likely need a ridiculously high res texture a la megascans.
This doesn't seem right.. Roughness sure, but this scene was built almost entirely out of Megascans stuff, and none of their photogrammetry models come with AO maps. The surface scans do, but I thought that was because those textures are used on surfaces with minimal geometry. If the model has all the silhouette…
Haha, yeah, lets all move from corona to unreal....:) I still don´t get a lot of the technical explanations, but if its like obscura says it is, it sounds great. Of course. Only for those that can or want to afford the asset creation time. Have you looked at the steam charts lately? How many titles use absolutely outdated…