I do not own a Totally, but I did try the Totally DE mm in the Troy, MI, store a couple of days ago.
It seems like I would have a problem with the straps (or at least one of them) falling down, so I took the bag off of my wish list. Bummer. It looks like a great bag, and I was looking forward to using the side pockets for my keys and cell phone.
I probably will try the bag again in the future just to make sure. I was wearing a cashmere cardigan (no coat), so I don't know if that would make a difference.
P.S. The bag was very light.
P.S.S. If you are in Michigan, the Troy store (free standing, not in Saks) is having a party this Thursday night (3/27) to launch new products. The SA told me that the Totally DE will be available to take home Thursday night. I did not pay too close attention to the specifics because I cannot attend. I recommend that you call first just in case I am mistaken about the time. All of the SAs there are great; I have never had a bad experience, and I am not a big spender in that store. I tend to buy all over when on vacation.