I'm preparing for an ascent of mt. Whitney in June and will be bringing my d800 along. I want to have the camera accessible so I've been using a CarrySpeed sling which I use all the time. It works great as long as I can keep a hand on the camera. However, The camera is very unprotected and I use trekking poles at high elevations and occasionally on descents and the camera just swings too much. I'd like a very minimal case that I can mount on my hip belt while the camera stays connected to the CS, but I can't find anything minimal enough to not be a significant bulk in my way. I'd love something like the neoprene covers I've seen, but they do not have belt loops. I usually have only my 20 or 24 2.8 on the camera so I don't need a case for a zoom or large prime. Does anyone have any suggestions?