Actually all the SB's I've owned have been high cut in the arms. I think the difference here is the reduced measurements I provided, in terms of width.I did not see that in the jacket description and after looking at it again at the SB site I do not see a mention of kevlar. What a pleasant surprise.
But on the arm holes: does your other SB jacket have arm holes that are too big?
Yes, I will post on my Detroit when it arrives, though I can't imagine it would look better than yours.