Hi. Does the Incase slider case scratch the back of the iPhone, when you put it on? I've googled this and have found that there are people that have reported that their iPhones' backs have been scratched by the Incase slider. I have also seen a video on youtube, in which a reviewer mentioned that if you put the incase slider on very carefully and gently, it will not scratch the iPhone. Has anyone's iPhone 3G's back here been scratched by this case? If so, did you put it on carefully and gently? I know I posted something similar to this in another thread of mine, and received reply. Another user told me that some have said that this case has scratched their iPhones badly and some didn't. I'm asking this again, but I'm being a little more specific, asking if you have put it on gently or not. Thank you!