I didn’t spec anything beyond the sleeve and body length. I suspect Aero has made enough jackets for me to know what will work, not sure if that factored into the build though. You may want to go up to a 46”? It’s a trim jacket but I only notice it in the sleeves. Plenty of room in the gut. More than enough and I tapered the waist by 1”.
The hookless took some getting used to. It’s a good zip. Never hard to zip but sticky on the way down. The waistband on the HWM exacerbates that difficulty, as does the stiff nature of CXL. This is a robust hide. Getting much easier though. I have exercised it quite a bit. Gently. I believe they only offer the hookless in this size.
