Ummm...
I differ with you a bit, that ear in the picture was attached to a cow elk shot at 16 yards, I had about 5-10 seconds to transition from stalking to unsling, nock, and come to a "high ready" to draw. We were in thick timber and alder, so she couldn't see me, but there was nothing wrong with her ears.
The sling listed has enough stretch to pull off one-handed quietly, the long strap let it drape around my torso, and I didn't have anything hanging off of the bow besides the quiver.
It generally takes me longer to get the arrow out of the quiver, than it does to get the bow "unslung", YMMV...
