Have bought the cover for my 820. It is handy, the phone completely protects (also the screen as it rises over on the edges) and does not limit the usability. The color is a matter of taste, on my black back cover, it looks beautiful, terrible on my gray from .... There but also not only the color, so should not be a problem. The shell also does not smell or dissolves.
Conclusion: Can highly recommend the Case. Without Flipcase etc. you get no better protection for's 820th