Useful, with one caveat: color. Designers benefit from glare-and-brightness comfort over long screen days and from protecting sleep after late projects. The catch is that warm/amber lenses shift colors, which is a problem for color-critical work, so for the design work itself, use a lighter, color-neutral lens that keeps colors accurate.
Save the strong amber lens for the evening, when blocking the most blue light matters for sleep and you're not picking exact hues. So: light and color-neutral by day for the work, warm/amber after hours for sleep. A multi-lens setup covers both.
