I switched from neck to wrist and then back to neck again in about 2 weeks.
I like the wrist strap, but then I need to carry my bag too, which I don't always want to do. When I go out with just my camera and a few rolls of film in my pocket, it's because I do not want to carry my bag. But if I do anything that requires two hands (like shop or get some food on the go), it's very difficult with a camera in one hand.
So I went back to the long strap, over one shoulder and under the opposite arm, so the camera lies against my left hip rather than my stomach. I leave it long so I can swing it up to my eye. Works great.
Of course, now I have a nice Luigi wrist strap that just sits in a drawer.