Looking to purchase a Mallory while the prices are good. I've never owned one and was wondering what the fit was like? I'm currently looking at an AW13 in dark navy and typically wear a 44R in suits / SC's. Do the Mallory's fit slim? Would I want to size up if I was planning on wearing a chunky sweater underneath? Really, any sizing advice would be awesome.
A 54 should be okay - I'm a 43 chest and take generous 42 suits or less generous 44s and can easily get a thick sweater under a Harris Tweed Mallory in a 54. If you're looking at the matching Mallory vest though, I'd advise sizing up to a 56 for that.