While not tight, it does feel very close to the back. I still have plenty of mobility. I was very aware of it at first, but by the end of the day I had forgotten about it. Next time I'll ask for slight shoulder extension and a touch more room in the upper back.
The more I wear it, the more I prefer the drape of Arrigo's jackets. I asked Palmisciano if he knew about drape (drappeggio, piega, etc) and he replied that if I'd like more room in the chest he'd be happy to do so. Not sure if he had never heard of it, or if he simply equates drape with roominess.