If you see this guy RUN JK
Check out Greg at a recent wedding we shot on the Beach in Ocean City MD, he has his BlackRapid RS-7 on one shoulder and his ThinkTank Photo Retrospective 20 on the other. This shows you that you can use both the bag and the strap at the same time.
Click here to pick up a Retrospective 30 by Think Tank Photo
Or pick up an BlackRapid RS-7 Right Here Black Rapid Strap RS7 Black Fabric, Curved Ergonomic, with ConnectR-2 and FastenR-2