Not sure how this slipped by me for so many months, but I've finally found a photo of Jeff Tweedy using a HOLMES skinny strap, in Bologna, Italy, 3.9.2012. I knew he had it but wasn't sure he was using it. Notice the shoulder piece is whip-stitched...the one and only I've ever done. Need to do a few more I think. Looks good.
Here's the same strap on video. Barcelona, 6.8.2012: