As someone (Till?) said in one of the strings listed above, the B&R strap is great and has a 'double' contour which fits the shoulder well. With rolling computer bags I generally find shoulder straps to mostly get in the way but I always still have one for those situations in which you really need it such as getting down, or up, stairways when carrying sufficient stuff that it is desireable to have both hands free. I generally have my shoulder strap though attached to my 'personal item' rather than my rolling bag so I can easily detach and attach if to the rolling bag when needed. This way, the shoulder strap is relatively out of the way but still useful. My 'personal item' bag also has a small handle so I do not have to use the shoulder strap on it unless I want to.