I've also read that it takes more power (battery) to render black than it does white. Combined with the need for more brightness it doesn't seem like a good solution.

Calibrating my monitors took them from having piercing bluish whites to more softer pinkish whites and reduced daytime eye strain significantly.

I then use Redshift at night with the undocumented "preserve" switch to combine my icc profile with the Redshift changes.