Yes the gps works on both MR1 and MR2. Verizon changed the ip address so you need to make changes in addition to vahalla. Look here for info. Serfboards has the info in his signature.
http://forum.ppcgeeks.com/showthread.php?t=61558
Why would you follow instructions for Alltel when you search and ccan find many threads talking about the Verizon GPS. And for your further reading on Verizon aGPS look here.
http://forum.xda-developers.com/showthread.php?t=424387