Well in regards to the ruggedness vs skin irritation. The inside can be made from hypo-allergenic substance but the outer shell should have been better. Haven't bought a nabu yet but perhaps they could have gone with a better solution then the rubber sides to protect the top glass and button. The rubbers at the side of the screen are to thin to resist wrist friction. And idea ex. create a top screen following the rubber band. "replaceable" with more durable screen covers. Asking for a bigger prize in their store according to the durability. This way it would have been more solid where it contacts the desk and still be durable for a "probably" cheap adjustment. It would have also been best if the button was on the side of the band so the button doesn't suffer instead. Maybe even on the top. So when you look at the screen you push at the other side of the band to switch the view.