If you're considering a luxury cellphone, you've probably given some thought to the Aura -- either as an object of unattainable techno-lust, or as a way to lighten your wallet by a grand or two (don't even get us started in Vertu). According to Mobile Review, Motorola wasn't planning on stopping there: The Ivory E18 (a name which either evokes elegance or animal cruelty, depending on your POV) featured a slider with two movements (a short slide for function keys, and a longer for the T9 keypad), a small footprint, and and