I just purchased my first Bbag this week (three!) in the medium size. If you look at my avatar these are the straps that all of mine have. But I just stumbled upon this one: And this has a different strap. Is this an older/alternative style? I have not ever seen this type of strap on any of the various website for purchase (BG, NM, Saks, NAP, Bluefly etc). Any help would be appreciated!!!!