Glad to see you picked the Hero
I have an Invisible Shield on my Touch Pro 2 - it's completely harmless. My phone is not matted but a mate of mine got one for her Sony Ericsson C902 which was matted and it was fine.
It's a super investment, keeps my phone pretty without the need for a pouch. Even protected it from one or two falls
Because of the way of the Thouch Pro 2 is designed, my shield started peeling off on one corner and started looking pretty ugly.
I sent them a mail to complain and they shipped me another full body shield, free of charge