In reply to JB:
Marmot Driclime or similiar would be idea. Problem I've always found (backpacking) is that there is not really such a thing as light rain in Scotland.
If you've still got 5 miles to go to your camp site and it starts raining, it's very hard to resist putting on an outer shell jacket. And negating the soft shell concept.
If you do though the DWR outer of the soft shell must, I imagine, provide some moisture managment for the condensation caused by the shell outer. Which is good.
I've tried various microfleece/pertex tops and always gone back to the fleece top/separate windshirt option. It's much more versatile through the seasons. I run cold and am comfortable in a t-shirt and windshirt down to freezing level. Only add the fleece when it goes below freezing.
Anyways, rambling, but separate tops may be something you wish to consider.