Anyone tried this combination yet? There are plenty of threads where people have successfully used AT&T SIMs in VZW iPads but not the other way around. I was tempted to try putting the SIM from my Verizon Droid Bionic in my ATT iPad, but then noticed that the SIM in the Bionic isn't a microSIM. Still, using a VZW SIM in an ATT iPad sounds like the best of both worlds: consistent VZW 4G speeds with a more versatile 4G radio (1700 and 2100MHz bands) in the ATT iPad. I've got unlimited data plans on both VZW and ATT and intend on holding on to both of them. Assuming one could obtain a microSIM from VZW, anyone tried this and had it work?