Long ago, I had one of the first BlackRapid straps—back when they were made in Ron Henry's garage in Bothell—and it was a bulky pain, but great concept. glad to see they've been a hit and really refined the product.
I recently swapped over my half-dozen Domke straps to a single peak design Leash and a few packs of the connector buttons. I was really drawn to how versatile it is— easy to adjust between a long cross-body strap or a short shoulder strap, and simple to swap between cameras.
More germane to your question, it does come with a tripod socket plate to turn it into a sling strap. The plate doesn't slide along the strap the same way BR slings do, but the strap doesn't have a gripper, so it slides around your shoulder instead.