I've tried it on my bag. I don't like it.
Maybe I've gotten used to stuff being behind my elbow unless I'm using it. If I'm in damp weather, I find it much easier to move the horn alone with it's much thinner strap and less friction, forward to change the prime in the lock than moving the entire bag with the horn.
I like the bag to ride just behind my right elbow, and my horn further back than that. There have been times with my bag when I've bent over; it has slopped forward to my front. If I'm near a fire the horn is doing that too. I'd much rather the horn be behind me, if not away from me, if I bring the bag forward to fish out a tool to use on my lock as I tend the lock by firelight. :wink:
Sure I could untie the horn, place it someplace, then do the work, then retrieve the horn, and retie it....maybe it's on the ground and maybe somebody steps on it...., seems a lot more complicated than simply moving the horn backwards or hanging it on something away from me, and when done no need to adjust it, or simply grab the strap and sling it back over my shoulder.
I'm also interested in know what they lugged about in the period from the F&I to the AWI. So that's a big horn on a single strap. OH and sometimes I'm the guy packing in and out the garrison horn, which is like 5 lbs. of powder. (best not be close to me if it starts to lightning and thunder.)
LD