as your bike has brifters, if you do find that you are riding a lot in real dusty environments, and if you are there for a long time, I highly recommend buying some wd-40 or something like that and spraying it into the innards of the brifters. Over time, with lots of dust, dirt, crap, brifters can get gummed up and they get harder to use. Spraying wd-40 into them will at least flush out particles, I do this once a year with my brifters and I don't ride in harsh conditions.
A few years ago on this forum there was a family of four who rode from Alaska to the end of S. America, and at some point, the wife had to fly back to the states to pick up a new set of brifters for one of their bikes as they had packed it in, I am sure it was from getting gummed up over time. They also had issues with their 700 wheels, not being able to find spokes when they had a lot of spoke breakages.
cheers