I didn't really consider the cloudy skies a "good thing" when I was in Scotland, but here they compliment your landscape and composition very well. The only thing "missing" for me in your image is a sense of scale. Without trees or shrubbery in the scene, I would have been tempted to try to put myself in the scene looking out toward the water. Just sayin'.
Thanks for you feedback f4, for me one of the main reasons I go to Scotland frequently is for the amazing ever changing cloudy skies, I love them? as for the scale, all I can offer is the road going through the glen at the baser of the picture?