Hi all, newbie here, I had a pretty good system for my old superzoom camera, using the Mountainsmith Zoom-S case. The camera's own strap around my neck provided top strap and when I wore the Zoom-S case it provided protection and kept the camera from swinging around, using a provided multipurpose clip-on strap. The case allowed me to carry extra batteries and cards as well. I could zip top most of the way if desired but still have quick access. It worked out great for hiking, cycling, etc because it kept everything snug and out of the way of the activity's demands. I'd like to do something similar for a E-M1 but also have more room for the Oly 12-40mm, 60mm macro, and 75-300 lenses, and also be able to use with dayhike or backpacking bags. So more space, and in a way that I could continue to use the camera's own strap as part of the system. I've looked at a few products but feel I could benefit from knowledge of more. Any product suggestions?