JSWolf, the slipcases from sfbags (Waterfield) are padded on both sides, plus there's a stiffener of some kind on the screen side (I'm guessing something like Timtex, but I don't know). I'm not sure a cover would help with being dropped, but I think the sfbag slipcase would probably protect it as much. Fortunately, no experience here to judge.
I have both the (leather) M-Edge platform jacket and the slipcase and I find that while the M-Edge is beautiful (purple!
) and fits well, I like the slipcase for everyday use. Not sure why other than it's easy to get to (no fiddling with straps I don't know where to put) and since I'm just holding the DX when I read and not the DX + leather jacket, it is quite a bit lighter.
But, of course, everyone's experience is different.