A:AnswerYes. Wife was getting out of her car & iPhone fell out of car (3.5 feet) onto concrete. IPhone 6s & case both survived without a scratch. Case is a little expensive, but has aleeady paid for itself.
A:AnswerThe gasket is pretty flexible for the screen. You may want to be more careful and depth may be affected by the gasket having to flex around the screen however. Rain/snow wasn't an issue for me, but I never dunked it. Too afraid.
A:AnswerYes. They make the cases for each phone and each version. You have to make sure that you get the version that matches your exact phone. The boxes have the disclaimer on the font corner specifying that if you have a 6 in wont fit the 6s ans if you have a 6s it wont fit the 6. For the plus is the same thing.