I didn't sign for mine, he put it on the back deck between the screen door and the kitchen door. Maybe it's not really required for stuff like the cases. Actually I'm not sure I signed for one of the devices I got last year, maybe an ipod touch. Heh, guy probably didn't want to drive back to the boondocks an extra time!
Of course I opened one of the cases. Nice touch, they even put a little red arrow on the back to show where to peel the cardboard off the plastic wrap to get the thing open.
The case feels really smooth and nice on the outside and the inside is microfiber so feels really soft. I guess they will be washable but it might take awhile drying, to make sure they really dry out? Time will tell. Good thing I got 2 of them since the first one is eventually going to attend the school of hard knocks.