Been using mine for over 12 months now on an almost daily basis with no problems.
First one I had was the older better quality model and that lasted 18 months before the connector fell apart. I got a new one because the connector design had changed and I thought if would be better, I was pretty surprised by the drop in quality of both the strap and shoulder pad but I was even more shocked when less than a week into a 3 week trip to South America the connector again fell to pieces. I was lucky that on both occasions no damage was done.
Obviously everyone's experience will differ and I have no doubt the majority of people will be pleased I certainly wouldn't take the gamble again.