Smalls, when I was healthy & strong, before my CCW, I carried a 5" blade (Scrap Yard Dumpster Mutt) is a shoulder rig under the t-shirt for years, & found it quick & handy. Tip up & handle down. I I'm used to pulling from my underarm cross draw & thought this would be good for me CCW, but I'm concerned how the leather harness would handle sweat.
I understand it's fully lined, but I would be buying sight unseen, thus the ?'s.
When I carried before, it was in a home-made rig of para cord & kydex. Not leather.