Arm length on a conservative business dress suit?

[Anden]

I got me a new navy blue suit form Cesare Attolini.

I work as a lawyer in Sweden and I spend most of my days in SC and odd trousers- combos.
I rarely use suits unless in court and for special meetings.
From a conservative business dress perspective - would you keep the lenght of the arm slightly longer compared to a sports coat and thus show less shirt?

 

[Simone1]

As a suit specialist, I always recommend my customers purchasing conservative business dress to only show the cuffs slightly. I'd recommend 1 cm - 1.5 cm.
If you get the sleeve tailored shorter than that, then it's not gonna be pretty when you do simple activity