As it seems, the viewmodel rendered when you open the inventory still only uses the Item prefab, ignoring any EquipablePrefab specified. Here you can see it with my item: While equippable prefab is ...

Copy character position for viewmodelAs you know the first person hands (viewmodel) in the world center (0, 0, 0), so hands doesnt take lighting from nearby liight sources and the most annoying thing ...