What type of camera bag are you going to be using? I hate shoulder bags for hiking, and if you're going to have your child on your back, where is your gear?

I have a Lowepro TLZ AW camera bag that I have used for hiking when I wanted to keep things light, and I already had a backpack to carry. The camera bag has a harness so I can mount it to my chest and have everything right in front of me. It will hold a DSLR w/o battery grip, and 2 small lenses.

The belt style systems like Cara is talking about would work well too.