For anyone considering getting (or more importantly, removing) an Invisible Shield, see my post here:

http://forums.macrumors.com/showthread.php?t=368865

I should also note that all of my attempts to contact this company have failed. They have not answered any emails and when I call I am placed on hold indefinitely.

Thanks for the heads up

alt contact:

3855 S 500 W STE B, SLC, UT 84115
801.263.0699 or 888-940-9663 (o)
801.281.3458 (f)

took them about 2 weeks to respond to my email last month. since the iphone became unlocked, the supply / demand for their product has outgrown what they can accomodate.

good luck