Okay, so it’s nearly 90°F here, and I’m layering wools! OMG! Only for you, my loves, only for you would I suffer in this manner!
I was, in my opinion, correct — the back and shoulders are too wide for the purpose. And the bib could use more length in front, so that I can leave the top two buttons open on the jacket. I can’t find the blue plaid shirt I normally wear in winter; I think that would have looked better, colorwise.
Anyway, here’s the final product. I will definitely rework it before writing a pattern. Click the pics to see the larger views.