I'm confused! I've looked at the Gryson Skye from shoptwigs, elux, revolve, etc and the strap that goes underneath and buttons at the bottom of the bag will go all around the bag. But when I look at eBay listings, for some colours, the strap only goes to the middle (ie. not all the way around?) Is this a surefire sign of a fake? Please please, I urgently need some help! TIA!