I wear the 42 and it's plenty comfortable. The F/W version felt quite a bit snugger with the wool lining - to be able to layer a sweater, I needed to size up to 44.
I'd say go TTS on the S/S version - no need to size up
Just trying to help you guys make the right decision ...
I don't mind being the shoulder to cry on when your size is sold out, but I prefer to be the one high-fiving you when you get a badass piece in your size !