... even as treestand hunters, we are not always in the tree.
True enough, bud. I know you've heard and seen this from me before, but I think it is equally effective on the ground -- to DEER. Here's a picture of Fall Gray on the ground. I think a deer would have a very tough time identifying this form as human, provided the wearer remained motionless -- and this isn't even turned to black and white or even a dichromatic view which is at best what scientists believe a whitetail can see in.
Again, this if for DEER hunters. Like I said above, if you're pursuing turkeys I too would probably suggest the Fall Brown.