I need a better strap than my tamrac n20, it was good and comfy for light weight but really spongy when carrying heavy lenses.
I'm thinking lumaloop strap, since I think it's higher build quality than blackrapid's. After owning a tamrac velo bag, I really want to stay away from ballistic nylon and velco.
anyway, my question is, I'll be carrying a bag (Crumpler 6MDH) and I usually carry the bag sling-style, bag on my back. Any of you care to share your experience with sling straps, overlayed with a camera bag?
All the videos from sling strap manufacturer only show a demo of the user + strapped camera. Those videos could only represent me, while inside my own home, wearing just a shirt strapping camera. 
The real problems, IMO, will be using it in real life, like when travelling.
I think most people would be wearing layers of clothes, jackets, etc while travelling. On top of that, the camera bag (sling, messenger, backpack, etc).
Comments? Experience?
TIA

