Hi Mike,
You're not alone in finding Dawkins disagreeable. He even recognizes this himself, stating on more than one occasion that he understands his antagonistic style works against him. But he also says that he can do no more than be himself, and so those of us on the side of science (I can't say atheism since I'm not an atheist) wince as his turn comes to speak.
While you might not like what Dawkins has to say (and when he ventures outside the strict confines of science I don't, either), consider that he's a very effective force in mobilizing Christians in the battle against what they see as Godless science. He might actually be doing more to help your cause than hurt it.
I wouldn't try to discourage you from criticizing Dawkins, but you might want to put a little more effort into being accurate and specific.
--Percy