So, I need a bag to store my camera in (once I get it). A friend has a Low Pro Slingshot 200AW bag, which is a back-pack style bag with just one shoulder strap and a waist strap to hold it in place. When he wants to access his goodies inside, he just swishes it around without having to remove the bag, and the zip is right in front of him! Great! But I'm left handed and the bag felt weird on the other shoulder (I'd want it slinging over my left shoulder). Does anyone know if these exist? I've looked at Crumplers (the Customary Barge: http://www.crumplerbags.com/Cart/index.php?prodId=207&catId=22&optId=10311) which talks about a feature that sounds like it, but has anyone got one and can you sling it around easily? Thanks!