The real issue is the quality of materials that Samsung use. You shouldn't need to wrap things up in cotton wool to feel safe using them unless you are a bit clumsy and always dropping things.
With the note 3, the silver bezel is not that durable. If you want to be VERY pedantic about it, I have now checked 3 of them, and they all have micro scratches on the bezel out of the box from brand new. These are not black lines, but just changes in the reflection that can be seen when looking at the top of the bezel around the screen under a halogen spotlight. I suspect that the bezels are marked as they are fed along the production line. But it shows how soft the bezel is.
In fact the S-view case with real stitching may worsen it as the stitching rubs as the case moves around particularly if in a pocket. But then naked doesn't do much better in a pocket, as the material of the pocket itself rubbing very tightly against the bezel has scratched it more on a mates Note 3.
The plastic is just too cheap to keep it perfect. But if you don't look at it under a spotlight, maybe you will never notice!
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