I’m on my 3rd Keela smock over the last 12 years. I’ve no doubt there are more breathable jackets out there but for the cost I can’t complain. 80% of my trails are through fairly dense forestry, things get snagged and ripped on a frequent basis. If I went for a more expensive jacket I’d be greeting but the end of my first outing.
I’m struggling to compare their waterproofness against the rest. If it’s hosing down water inevitably gets in one way or the other. Over all, it keeps me warm and dry when it needs to.
I’ve just had a butchers at their site and sadly, I can’t see the smock I’ve got. The Stashaway Pro looks almost identical other than it having a full length zip.
FTR, I’ve also got a Falkland and Munro jacket for fishing / climbing and they’ve never let me down. IME the big difference in their extreme jackets being they don’t ‘wet out’ when the heavens properly open.
I’m not sure if you’ve read some of their buff re the effectiveness of gore tex when it’s cold and damp outside compared to their offerings…makes for some interesting reading.