That kind of thing, I think, does much more for providing a good RP environment than anything else and is one of the more important things to me. I give it my best to always keep this kind of thing up. I fail from time to time due to being in a hurry, etc. but it definitely something that separates realms in my eyes.
Aye, when playing D&D RP was always more about our actions and interactions then making everyone read or listen to a narrative, though of course short narratives are rather vital in pen and paper games
I've always tried to translate this to BM and mostly let the game mechanics handle the "narrative" part.