I wouldn't call it full visibility. It's a little bit blurry and tinted. It wouldn't work as an overall glow because the gaps between the etching are what you actually see through. If the whole lens was frosted, you'd be pretty blind. It also wouldn't work for white lighting because the colored lens only cancels roughly the opposite color.but if you were using blue or red LEDs, the opposite color lens inside of the LEDs would cancel it out and you could see fine, assuming your etching has gaps.
No further movement on the costume yet. I'm biding my time, hoping the costume will go on display somewhere again or Disneyland will get theirs out in the park. I don't feel like there's good enough reference of the back of the pants or belt to make those 100% right just yet.