Originally posted by GDRoth I use a similar Op-Tech strap, but one that attaches to the side lugs.............it still slides up easily.............
I don't have the type of lens the OP was asking about
however my cameras have the Optech USA utility strap attached to the right upper attachment point and the camera lens hangs down toward my right hip
it doesn't matter which lens I have on my camera
I can adjust how far down my side it hangs by just pulling on the strap's end.
I also have the Joby Ultrafit Hand Strap and Ultra Plate which attaches to the same attachment point and at the tripod attachment point
I often carry my D FA 150 - 450mm and/or D FA * 70-200mm 2.8 hanging at my hip and place my hand into the grip to help monitor any swinging. I also will place the lens cross body holding it in the crease of my folded left arm to help with the weight as a change of pace
as a final safety back up, I have the Joby Camera Safety Tether attached to the other upper attachment point and I can secure that to the utility strap in case the quick release connection of the utility strap would fail.