I have a pelican case that I use for camera and gear for the most part. But think something that makes it easier to carry my stuff when just out and about would be nice. I was looking at the slingshot at best buy today and it seems like a pretty good pack, might feel like a fool with it on my back, but whatever lol. How well does it work to carry basics to last for a little hiking trip or outing? Or one that could carry a couple sandwiches and a couple bottles of water, maybe get a grey card/folding reflector in there too. Thanks in advance.