Big difference with lugging a DSLR around is the bag you will be using. I have several buddies with DSLR but we all have different bags. We noticed the guys with the big bags/backpacks never take theirs out. You want a small enough bag to carry and have your gear you will be using. I have the Lowepro Slingshot 100 AW and love it. It's a small sling bag that I can swing around anytime to pull out my camera or store it. It has plenty of room to store my camera, 50mm, 105mm, 18-200mm, charger and Sony camcorder. Plus is has a pullover raincoat.
I have the unconditional warranty from Ritz. From what the lady told me, as long as I bring the parts back I should get a new camera if I break it. Plus you can bring it in and they can send it out for free sensor cleanings.