The Nature Whites were designed to hit the sweet spot between light linear switches (Reds) and heavier ones (Blacks), and also to provide perfect transparency for RGB LEDs. They were used exclusively in the Ducky Shine 5 -- Ducky had a proprietary lockout on those switches -- until very recently. They're going to be used for the RGB model of the Vortex Pok3r as well, which is expected to be released at some point in May, according to mechanicalkeyboards.com.