Someplace I read a mention from an ipad user indicating that they thought they saw an enabled option to use their AT&T iPad as a hotspot (tether to a wifi device(s)). Can any current AT&T iPad users confirm or refute this information? The hotspot feature clearly differentiates between the Verizon and AT&T, but Verizon is about $10- more per month on the data plans so I'm torn as to which to buy. I'm an AT&T mobile customer.