I use a messenger bag by Pelle, works very nice, although I would like to get just a small
shell of something to protect the keys of the BT keyboard, otherwise, it's a dandy carrier;
Got mine from a Wilson leather outlet store in Orlando a few months ago;
Pelle messenger bag
In the photo above, I have the iPad pulled out slightly, when it's in the bag, the iPad
is even with the top of the bag, the keyboard is a little longer, but it fits and works fine.