I wouldn't be too paranoid. A little common sense goes a long way. Things like where you swap batteries, cards, lenses and the like.
The DSLR has done thousands of k's in a good quality backpack on a bike and has been used during storms, put up with dust, sand, mud without any complaints. Have just been careful when opening it up when swapping lenses and such.
But, then again it is a Nikon.....
