I know there are some out there that carried their iphone 3, 3G, and 3GS phones without a case. I also know this method caused an increased risk of scratching as you would guess that it would. I think I read that since the iphone 4 is glass on front and back, and supposedly made from military grade break resistant glass, that the new phones would be more capable of being carried without a case. Is this true? Have their been scratch tests yet? Does anyone plan to go without a case because of this claim?