I passively look for stuff all the time. I've been trying to find a really nice sling. It came to me over the weekend that I've never even seen a sling made by the firm. Sure, I own a great gun rug and an ammo box. And I've seen an over priced leg of mutton shotgun case. I'd have risked the wrath of my wife and bought it except it was so worn. So I travel to the gun shows, all the time looking for the unicorn. Guess I've gotta go dig out my Heiser catalog and see if they listed any.
I've bought a couple of suede lined "carry straps", certainly not a proper shooting sling.