Hi y'all! I have a version of Patagonia's Sling Bag 8L and I ADORE the clip that easily allows me to take this on and off and I can loop a grocery bag through it to make it easier to carry. This is important, as I'm a cane user so sometimes I need my other hand more free. I'm looking for a larger alternative, that has something like the chest clip on this bag. Does anyone have any suggestions? Thanks!