Ref, I've gone the same way - the guitar seems to hang better like that, so your hands are naturally positioned for picking. With a strap button at either end of the body, your picking hand has to be somewhere around your belly button, and your fingering hand has to be somewhere about 3ft to the left! Hung from the neck and the end strap button, your hand positions are much more natural.
I found though that the strap kept slipping off my left shoulder, especially if I move around while I'm playing. I've worked out a solution (involving a plastic tube and two bootlaces :-) which works well, and as a bonus kicks the face of the guitar out and up slightly which positions it better. I've just acquired a digi-camera, so I'll take some piccies of my setup and see what you make of it.