I hate to input this at this late time but I have some of the Testors and didn't care much for it at all. It is, as another poster noted, thin white glue which allows it to dry clear. However it has not strength, is difficult to use to hold the parts together while it dries, and I really would be concerned about its long term viability. I am betting in 2+ years or so the parts might come apart although if they have no stress on them then maybe not.
Now a thought that popped up. How about using Future like a glue? It probably has as much adhesion as the white glue and obviously would dry crystal clear. When I did my Invisible Man I believe I tried the Testors and gave up. I think I very carefully applied Testors liquid plastic glue to it was confined to the joint. I clamped some of those parts together while doing that. After they were secure I dipped most of them in Future. I wonder though if it might be used to glue the parts as well?