In our last house we had warm white for external lights and cool white fluro for internal.
We had Lexicon walls, white ceilings and white gloss work and gloss white tiles with gloss white kitchen cabinets.
What we found was the 'clinical' sort of feeling inside, outside looked great but inside always had that clinical feeling, to be honest even at day time the house felt very clean and crisp because of the colours. In hindsight we should have done warm inside to soften it a bit.
In our new house we decided to get a more warm feeling so we are going with Tranquil Retreat for the walls, white ceiling and white gloss to keep it crisp but a natural marble stone look tile on the floor and still keeping white gloss kitchen.
This time we have gone with warm white LED everywhere inside and outside and hoping the warm white lights with the wall colours will give a warmer feeling to the whites of the kitchen, gloss etc.
So in summarising I wouldn't use cool white inside unless I was using dark and moody wall and cabinets to lighten it up for me warm white is your best bet.
Now we were worried about the brightness of the warm white especially in down lights and in particular our living room as the ceilings are over 3m in some points, what we did was research and compared different Downlights we ended up finding some 850 lumen warm white down lights at lighting illusions that were very bright and this solved our issue, other lighting stores tried selling us 350-450 lumen Downlights and had we done this I don't think we would have got the brightness needed to have a good functioning lit up areas using warm white.