I've hooked mine over the little add-on hook on my meat hauler Cabela's Alaskan frame and am trying to do the same thing with the new pack from Wilderness Specialties, I'll probably end up making a bump out of electrical or duct tape for third season CO.
Even though I typically have a cow and bull tag and might need the rifle in a hurry, hauling out meat I'll usually use the pack feature that stores the rifle, an add-on scabbard in an Eberlestock X2 daypack for first load and a strap in rig on the Wilderness Specialties pack to keep it under the pack and retained.
This year's sling is a SVL with the handle to save your hand fatigue that adjusts up or down the strap to fit a different type of carry. For me walking a minimum of 3-4 hours hanging on to a sling the handle is nicer to hang on to.... but not as nice as having your hands free and using a walking/shooting stick to keep my tired old body upright.
