One artistic limitation of the LED backgrounds seems to be that they can't simulate hard, direct light like a focused key light or the sun. For example, in these Sergio Leone scenes:
Instead, they are limited to softly lit scenes in which the screens create only ambient light, like what you get with overcast skies and "magic hour". See how in this typical scene the lighting design requires the soft light look:
Here you can seen hard sunlight on the rocky background, but Mando himself is in the foreground and lit with the ambient "cave" light.
Presumably, they can augment the LED IBL with a standard floor lamp to (for example) add the punch of a hard key, but in watching the show they seemed to shy away from that. Not sure why.
TC