Still not the same IMO as going caseless. With my 4S I just have a screen protector and a matching piece on the back. I accept that if I drop it, it may break. When I'm do something active I might throw on my case (which is quite thin), but I can't wait to get out off after a half day.
When I get the 5, I'm not sure yet. It's less prone to breaking but the back needs some protection from scratches. Either film or something like this: