Hi,
Following review is based on my 2weeks in experience of SGP shield.
First off, there are many skins out there and they look practically same, but after little comparison and researching, there were few points help me to decide to get a SGP shield over IS.
This SGP skin stands out in better durability, thinner than IS (The thinest one I've known), optical enhanced film, full body protection (even corners and bezel), and lastly bubble free.
So far, I am totally 200% satifisfied with it and NOT regretting my choice in overall.

With little dust on.