It was advertised as giving an error when connected to the camera, I had read about an issue with screws coming loose on the aperture lever, had some knowledge of dismantling them.
So for £60 I thought I would give it a go, I connected the lens, and yes it gave an error, put the camera in manual mode and tried the lens again stopped down and hey presto, it worked. Have taken around 500 shots with it since and it has been flawless so far, reliability is always in the back of my mind.
Always keep my old lenses with me just in case, but it has certainly opened my eyes to third party lenses and the quality that can be achieved, certainly for me anyway.
I would think the sensible route if you are taking shots for a band would be to have a contingency plan anyway, if I go out for the day and it packs up, it's no loss.