ahh, good times, sitting around x-mas eve, playing with ppc gps...
wanted to note that the linked article is for the touch HD, and therefore GSM. also unlocked refers to the fact your using the phone on a different carrier, so if the carrier supports aGPS, and you properly change the server addy/ect.. you should be fine.
on a side note, I prefer my mogul on GSP vs. aGPS for a few reasons.
if aGPS is enabled, the qualcomm will look there first (timeouts apply) then goes to the internal readings.
if on a phone call, the chip can't access agps data, therefore you have extra timeout time to wait before it can get a fix
using live search or google maps ect..(online) the lock does seem flaky with agps and will sometimes confuse the phone/app and generate odd notifications like "you must end the call before going online" (something like that, can't remember) even though you don't have a call going (me thinks aGPS has a connection that doesn't register as EV/1x data, but still ties up the line/radio)
anyway thanks for the other links, and I'm sure your minions will find this info helpful too.