I received my 70-200 F/2.8 IS II today (YAY) and I knew it had a tripod ring, but I thought it also had camera strap attachment points on the tripod ring like some other heavy lenses do, but this one does not. I did not see anything in the manual about it so I thought I would ask here whether it is necessary to use the tripod ring to sling the camera or if my current setup (pictured below), which uses the camera body for one end and the tripod ring for the other, is adequate? It seems to me that even if the lens is heavy (my understanding is that this particular lens is more borderline-heavy) that this would put half of the weight on the lens, half on the camera body and the stress at the EF mount would not be much to worry about (but then I'm not an engineer or physics guru). Thoughts?
Edit: that's a 60d with a grip if it makes a difference.