The relationship between a photographer and his equipment is a very personal one. In many ways, the camera becomes an extension of the photographer's self and they are reliant on the equipment to help capture in microseconds what their keen eye is observing.
Cuco has remained loyal to the Nikon brand, slowly graduating from his first classic film F4 to his current digital D850. He is persuaded by the latest mirrorless Nikon Z7 and will likely give into temptation, sooner rather than later, and add this new technologically advanced camera to his repertoire.