If this sounds familiar to you, it's because the VX uses the same pyramid-like structure as the Windows Phone 8X and Droid DNA. Essentially, the reason for the back cover is to tuck away the micro-SIM and microSD slots and minimize the clutter on the outside of the phone.
To minimize "remote control clutter, " both devices connect to any Denon receiver using the dock control port and give users command and control of their iPod via the receiver's remote control.