Did Predator camo or Inigma camo( I'm not picking on anyone,just a for instance.)have a scientific test done?? No,I don't think so. But you use it and you say it works.
All you have to do is have someone put it one get up in a tree and see if it works or have them sit in the woods and see if it blobs up at a distance or walk by a guy at ten yards and not see them. Apples to oranges comparison. These companies aren't proclaiming you can take an age old fact about hunting(use the wind to your advantage) and throw it away and you still be as succesfulare they?
If Predator camo tried to tell me I could sit with nothing behind me totally skylined and not be seen I'd question them too.
Read the info on how Baking soda works to control scent no lack of scientific facts with that.