I was thinking about trying out one of the LBM 1911 jackets, but I'm iffy on the sizing having never owned an unstructured jacket. The chest on a 38 would serve me best, but the shoulder is wider than I'd normally look for. How crucial is it to nail the shoulder fit on an unstructured jacket given that there's no padding to stick out? Will it look droopy if it's too wide? Thanks in advance for any advice.
I think it depends on how much wider the shoulders are than what is ideal for you. I have a couple of the LBM 1911 SC's and they are both about an inch wider in the shoulders than what is ideal for me. But I think they look fine. However, any more than an inch or maybe 1.5", might be too much and as you say, might look droopy.
I do like the LBM 1911 blazers very much and recommend them.