POC is a company that's not afraid to make a statement. The Do Blade will certainly stand out, and for some, might appear better suited for a 1970s disco rather than a bike ride.
Styling aside, the fit of the Do Blade is excellent, and the adjustable nosepiece lets you fine-tune how close the lenses are to your face. The extra space at the temples allows you to easily wear the Do Blade over helmet straps, which can be a pain with other models. Fogging can be a problem with this model, especially on long climbs or hot days. The lens swapping mechanism can be a bit hard to deal with, too, and requires you to flex the frame to make a switch.
Who it's for: Cyclists who want a pair of performance shades but seek to veer from sporty, athletic-looking sunglasses in favor of something different.