Does anyone know of a lightweight adjustable strap where the adjustment slider is fixed to the camera, instead of mobile along the strap? I’ve tried the Peak Designs straps, for instance, and if you cinch the strap very snuggly, the adjustment slider has to travel way up high by your shoulder, making it hard to access when you want to loosen the strap. This is a pain for climbing and biking where the camera mustn’t swing around. Any suggestions?