I haven't built one, but I owned one of the kits for a few years (traded it away for a rare rocket kit I wanted).
It looked nice, although some of the proportions in the box seemed a bit odd and the flexible nature of the vinyl with some of the parts requiring a bit of de-warping had me shying away from wanting to build it after I acquired it.
Come to think of it, I don't ever recall seeing any modeler finish one of these (except maybe in Japan when they first came out).