I have been using the Duo Flip Case w/Belt Clip for about a week and absolutely love it!
Axim Duo Flip Case
What I like most is that it allows me to cradle my Ax without removing it from the case. In addition, the straps have an elastic band hidden inside the cover that allow you to get a good fit whether you're using the standard battery or the BIG FAT extended life battery.
The only thing I don't like about it, is that they didn't make any holes for the jog-dial or the record button, so I had to carefully cut my own.
They make another case that has an external battery pouch for carrying an extra battery, but it doesn't allow you to cradle your Ax without removing it from the case. I have suggested that their designers add the battery pouch to the Duo Flip Case, so perhaps they'll have that at some point in the future.
Scott