THAT is exactly what I was trying to do
Aron Wohlfart ! From the Hi-Res reference
photos I have seen anyway, it appears that is what they did for the real suit. With this idea I started calling places.
I finally had a rare opportunity to speak with someone who knew what I was trying to do. She sells zippers and takes part in Hollywood Costumes. She basically stated the same thing as Luna. And that the #6 separating jacket type invisible zipper is a much bigger variety and not suggested for use in U-zip patterns as it limits movement, stretch and can bunch.
In that respect, a hidden zipper across the hip /belt line makes sense. The hidden zipper coming down from the back spider looks to be the same variety and completes the T-shape design.