I have never broken an iPhone, not one piece of glass broken. I use a hard clear case from the Bumper Program for my iPhone 4 and never had a case on my 3G and 3GS I keep thinking the Otterbox's are overkill for me and cover up the beautiful design. Would a bumper be enough to protect my 4S incase of maybe one or two drops over the year I will be using the 4S?