It's a lovely jacket - very solid and well made, with great features and a really well fitting hood. I like the fact that the hood can be removed (and, sshhhhh.... I think it does look cooler without the hood...)
I'm just under 6'2" with a 43" chest and fairly broad shoulders and the XL is a great fit all round. For me the sleeves are just the right length, and there's enough space across the shoulders to wear a t-shirt and a shirt or jumper underneath.
The big pockets work well, I went for a walk with my travel mug of coffee and it fitted in fine, so I didn't need a little rucksack. Very handy.
Being cotton it's warm and windproof without being sweaty like hardshells often are. I probably wouldn't climb a mountain in it unless it was properly freezing, as I'd overheat, but for dog walks, bird surveys and day to day out and about in the west of Scotland, it's ideal.
I haven't been in heavy rain in it yet, but based on my old Ventile jacket I imagine it will be fine. In my experience Ventile soaks up some water, then the fibres expand, which makes it watertight. It also makes it go a bit stiff like cardboard and less breathable (but then all waterproofs are less breathable once they wet out). I now use my old Ventile jacket for outdoor work as the material is absolutely bombproof.
All in all - nice job Frahm. I'm sure this is a jacket that will last me for many years.