This is a great thread. I'm also looking into getting a DSLR for backpacking. Did a trip with my siblings Canon Rebel and had it slung over my shoulder/neck for the duration. About a day in I vowed I would never hike with a DSLR unless I had a good carry option. That Keyhole looks promising, but what about overnight and storm storage? Thoughts on Lowepro bags?

What would be suggestions for a intro/intermediate camera that is weatherproof? I saw the Nikon 40D, but I'm wanting to go Canon so that I can share components with my brother and sister. Anyone know the Canon equivalent?
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"Brothers. What we do in life, echos in eternity."
-Maximus Decimus Meridius