I'm really interested right now that I know as long as I get the body sizing right, I can always have the sleeve length fixed.

I like the overall look of the jacket, minus the patch. It may kill any vintage appeal in the long term, but I think I would remove it. That and black is not normally a color I go for since I wear mostly shades of brown, but with some proper aging to the waxy cloth it should pair well with the rest of my fits.
Do most of you wear the jacket with or without the belt? Does the fit still feel slim when worn without the belt on?