Metering for ND Grad
If you meter through the grad, technically you're changing the information the camera is metering. Instead of a bright sky, you now have a darker sky, so it's technically not the same. You can't be sure exactly what decision the camera will make. It's better to take control of the metering and settings, knowing how the grad will affect the scene. If you have time for a grad, you have time to meter.-- hide signature --
Joel Nisleit Photography
A camera or lens can't take good or bad photos any more than a brush and canvas can paint themselves a masterpiece.
If you have time for a grad, you have time to look at the LCD & histogram & make changes as required...you really don't need to know the numbers to see if your shot looks the way you want it.
In the days of film there was no choice, but digital gives you the choice & more importantly, the confirmation. Use the best tools you have, rather than rely on old methods would be my advice.