In reply to Offwidth:
haha I lived in scotland and western grit at the weekend was worse than most the crags I have chosen to summer climb on in scotland (that said I'm not stupid so I'd avoid stuff like glen nevis).
The weekend before I hardly got a bite though - in the same area as it was windier.
I would say the people who were prepared for midgies on the grit at the weekend seemed to be enjoying it a fair amount more, there was a lot of people scratching and complaining and many of them quite local!