Broadband open at the camera avoids any reflection, flash attrition or avoids shadowing effects during shots as I have read on other shells.
Be careful only to shippers unmarked type car charger) for if the plastic tip around the metal part is a little thick, it will go through the hole for the expected load (for my part, I leave the phone has half of the shell when I load it in the car and hop the turn is played).
The blackberry chargers, themselves, can be used without problem.