Popping in to share my opinion on a couple questions posed above.
As for attaching a key fob, I tried several different ways using the chain, etc. and I just didn't like the way it hung. So, with my medium olive, I actually kept the black "lock" key fob that comes with it on and then attached my black tea rose fob to that, clipping it to the slit in the leather where the lock fob pulls through. Although you do see the entire fob with hook that way, it hangs nicely and I prefer it. I think if you browse through pics on the various Rogue threads, you'll see others do that as well. That's where I got the idea!!

As for carrying, I use the two shoulder straps and find its super comfy to use that way. I fold the handles in and don't find that it hinders me from grabbing anything that way.
Good luck deciding...this 1941 line is killing me...and my bank account, but I LOVE IT!