I'd say they are a waste of money. The purpose of camo is the break up your outline. Humans, who see very good in color, are good at spotting un-natural looking items. That is where the gillie suite comes in... it uses local flora to blend in better. Animals, who usually look for movement and outlines and who don't see in color very well (but have excellent contrast vision) are very easy to fool. The old blotchy BDU patterns will work quite well. I have had deer walk within 15 ft of me while I was ground hunting when I was wearing an old but serviceable set of BDUs. I was just sitting on an old downed tree and up walks this beautiful doe and her fawn. The same day I had a squirrel jump over my leg without realizing I was there. I had on the BDUs, a blaze orange beanie, and tan jungle boots. All this new fangled cammo is just for our money... it doesn't work any better than the stuff people were wearing 100 years ago.
Ron,
Deer don't see reds and oranges from what I read. It just looks gray scale like the rest of the world. The only color that deer see well is blues from what I have read.