For those of you who are getting your hands on the Verizon LTE iPad today, MacRumors notes a cool trick if you have an AT&T SIM card laying around. According to their findings, the Verizon iPad's micro-SIM slot can actually be unlocked to use AT&T's 3G network.
There's no real hacking required either. All you have to do is pop-out the Verizon LTE micro-SIM card and pop-in the AT&T 3G micro-SIM card. This is a great trick for if you're in an area with minimum Verizon coverage...