The forecast was a bit wrong! It was dry with spells of rather ferocious hail. Oh well! It was still wet enough for the boots. And the hail gave the landscape a good wintery look!
So what is the verdict? They did a good job! It was quite swampy, but at the end of the walk my socks were merely a bit damp. That can have been sweat! And they felt good. I did traversing, and scrambling, and scampering through swamp, and they were comfortable for all of that. And I'm glad they were, as now I've made them so muddy I can't possibly bring them back!