On the right it shows they used the 'butterfly' technique to flatten the halfbelt seam. Too fancy for a workwear style jacket imo.
There's a Freewheelers jacket that continually pops up here. The leather looks beautiful and it's clearly expensively made, but the seams are so invisible that it looks really off. The arm in particular looks like someone could tear it off with a tug. This might not be the case, but I wouldn't want a jacket looking that way either.