I found this case on Amazon. It was very inexpensive so I thought I would give it a try since the Blackberry Flip case will not fit the Verizon Z30. Not exactly the same as the back is not replaced but overall pretty happy with it. Can place on Qi charger with case on and still charges.
Amazon.com: Einzige Slim Fit Leather Case for BlackBerry Z30 QWERTZ Smartphone Premium Leather Case with Free Universal Screen-stylus(grainy) (Black): Cell Phones & Accessories