Had mine in the silicone cover all the time. Dropped it twice, and both lower corners are dented. Screen has some minor scratches, nothing serious. The backside is speckled, must be from the silicone cover. A line is visible as well, originating from the form in which the silicone was shaped. The photo was taken after cleaning it a bit.
(Photo taken with Jolla. Shows up alright on the phone and in Windows Explorer. Somehow it uploads upside down?)