Thanks for the review of the claps, I’ve been looking at them but was hesitating as 7mesh really seem to struggle to get things right at the first try.
Regarding the stretch, I think Gore-Tex released a stretchy version last year. Some of that would make sense in these pants I think. https://gearjunkie.com/gore-tex-pro-2020-stretch
I have a Guardian and absolutely love it. The only thing they should change is the silly elastic cuffs. Why not just have some low profile Velcro ones like the Revelation has?