i love my pig hunting - mainly stalking about with bino's under full moon on stubble (lightforce walkabout kit), or poking around orchards at dawn with my bow.
however, pis are no comparison IMHO to the red and fallow deer i've gotten onto in recent years and hunting mates agree. deer are much more switched on. eyesight and hearing they cream pigs!
Only reason i wear camo when pig hunting is beacuse i've got the camo gear, so might as well wear it, might help a bit. however, for deer hunting i reckon it's imperitive, when you need every little bit of extra assistance you can get, to stalk in for a close shot.