does this stuff really help out, or is it just a marketing scheme? i picked up the pants and jacket from dicks sporting goods at a pretty good deal. they gave me the military discount and everything. just trying to get a feel for what i need to do while wearing it. im still going to use the scent killing sprays and stuff, but do i need to use the same amount as traditional camo, or do i not need to use as much due to the inherrant scent blocking of the gear?