Cases like the Zum, i-Blazon, iSkin solo Smart, etc., with the ability to lock the Smart Cover to the case; is this feature really that useful or more of a gimmick? I'm not buying into the idea that I'm going pick up my iPad by the SmartCover or accidentally drop it because I was holding onto the wrong end. I'm going to hold the iPad like it was a $1000 device and pick it up with the same care. So is there anyone out there that can convince me that a locking mechanism is worth choosing such a case over one that doesn't have it? I just don't see the true benefit.