I do have one. Never build it, so I can't tell you how it rides.
Any good? I doubt whether 'good' is the reason for people to buy it. It is a vintage carbon frame. People buy it for sentimental reasons or because they think it is cool. At least that is why I got mine. Not because it would perform better than any of my other rides. Actually I doubt it does. It is very light and carbon was only just introduced. I expect steel frames of the era last longer and nowadays carbon rigs have seen more r&d, so more stiffness, reliability at even less weight.
I do not know of particular issues. Of course it is not bomb proof, but again I do not think people would buy it for that.