Ok, so received the Darevie jersey, shorts are still en-route.
First impression is that it's remarkable value for money. The fabrics feel good quality, the zip is good, it has a zipper guard at the neck (like my Alé jerseys), the waist band while pretty thick actually works very well, the stitching is great, the pocket stitching even has reinforcement inside!
Sizing is interesting - I bought medium and it's slightly larger than my Castelli Aero Race 6.0 jersey in medium which fits tight, and a similar fit to my Alé PRR jerseys, also medium which are close-fitting but not tight. I could probably fit into a small, but it might end up too short. I'm 183cm/6'0.
Interestingly it feels a little too long at the front (the zipper doesn't lay flat), but it's measures up shorter than the Castelli jersey, odd!
I made some measurements of them, laid flat, in cm, all medium:
Castelli Aero Race 6.0 - Darevie - Alé PRR
Zip length: 49 - 47.5 - 49
Sleeve width at end: 9 - 10 -11.5
Sleeve length collar to end of sleeve: 37 - 38 - 39
Across body under just under sleeves: 39 - 42 - 42
Waist just above hem: 36 - 34 - 38