i got today a BlackBerry Leather flip case for my Z30. While BlackBerry store in the Dubai Mall said it will be one more week till they have them, Axiom had one available in Al Wasl’s Spinney’s shop (but not showing them online available in their store either). The price tag is at 165AED which is OK. They also had a hard shell and a Holster available.
To use the Leather flip case you need to replace the back door of your Z30. This makes it thinner than it did on the Z10 with the Flip Shell.