Well,
'The latest version of AMD’s Radeon Pro Software makes it easier for game developers to test their creations and for graphics professionals to invest in a single workstation for professional and recreational purposes. The new graphics driver suite allows you to install up to three different driver versions and switch between them on the fly. In addition to the Radeon Pro Software, you can install two versions of the consumer Radeon Software suite and switch between them as needed without rebooting your PC. This allows developers to test their creations' performance without moving to a dedicated gaming machine. It also allows them to use their workstation computer to wind down with some gaming at the end of the day.'
Ok nVidia, your move.