If there is a definable breakup of the room to the area you want warm white it can work but you'll only know when you try it.
Had a client want me to fit a light he bought and I could see where the warm white against the cool looked odd initially but because it was in an area over a sofa and crucially there was a dividing pillar in the way, it worked, so I think it needs to be seen to be judged.
Have recently fitted 12 Amitex Centurians 12w dimmable and 'white colour' dimmable to an open plan kitchen/diner/lounge on 3 different code/zones on the remote and its interesting to go from cool white in kitchen to warmer white then to warm white as you get into the lounge. Lovely lights to fit, 95 cutout and a flush look. There is some pretty stuff out there now.