To start with the good: the Shetland tweed is beautiful and the perfect weight. The construction is also very nice. The pockets are elegantly shaped.
I do have some issues, primarily with the cut. It is very trim for a chore coat. The body tapers and creates somewhat of a tubular silhouette on body, which in my opinion is not ideal. The shoulders and forearms are quite narrow, so I am unable to layer more than a thin merino knit under it. The cuffs are also impractically small. They are smaller than the cuffs on most shirts I own, so in practice they pretty much have to be left undone.
For reference, I am 187 cm / 6'2" and weigh 80 kg/176 lbs with a slim build. I purchased a size L/42, my normal jacket size is 40 or 42.
Worth noting that the collar and cuffs are not lined like is shown in the product images. Would have been kind of nice had that detail been kept in the final production version for a nicer on skin experience.
Finally, I think this jacket would look more balanced without the bottom button. In my view, the jacket is too long to have a button so close to the hem, it just ends up being constricting when buttoned and looks "off". This is just personal preference and I do not dock the jacket any stars for this.
Overall, I am still keeping the jacket despite the aforementioned issues. I hope future versions will be improved.