i'm buying a 38 1A and i'm v. near your measurements. granted, it's my first inverallan, so i'm not sure on sizing, but i figure, i buy 36 in all my blazers (except for a few brands where i'm 34), so this counts as sizing up. The 38 has a 19.5" chest measurement and I don't want it to hug me, and 36 would.
why is it there's no US suppliers? are wholesale orders prohibitively expensive due to like import costs or something, or is the whole "made by old ladies" thing prohibitive for stock to anybody but the few places that already have stocking arrangements?