you can't wear 2 babies in a single sling - you totally can. in fact i think gypsymama has pictures of a toddler and an infant in the same wrap - one in front, one in back.
you can't mow the grass - a good friend of mine does this all the time. with a riding lawnmower, and ear protection for the baby.
we would never eat if i couldn't babywear while cooking
you can't hang christmas lights - i did this. i'll see if i have a picture...
you can't go skiing - i don't see why you couldn't go cross-country skiing. in fact, i know there's a gal over at the babywearer that has pictures of her cross-country skiing w/baby on her back.
ETA - i'm all for hunting, heck if it weren't for FIL hunting our freezer would be half empty, but i think it's extremely dangerous to have a small child anywhere nearby while using a firearm. accidents happen, guns malfunction.