Got my clip coats, one in a medium the other a large. I typically am an XL or 54 in cabourn pieces.
After trying both on several times, I will prob keep the large. It fits better arm length wise and more comfortable through the chest, allowing room for a sweater...although in Oklahoma, I could prob wear a tank top under it and keep plenty warm during the winter.
I am thinking about taking it to my tailor to see about getting it taken in just a tad at the sides.