So, I finally got the opportunity to use the casting tape today. I want to preface this by saying I'm not a professional caster.
The tape seemed to dry out a bit too fast (it was a bit of a hot day, but I used cold tap water. As a result, the layers didn't seem to mold together very well. However, that may have more to do with MY lack of experience.
The one complaint is that the hot pink had some light (almost white) spots in the roll, and a strange waffle pattern in the ends of the rolls.