Put like that, I agree - I had a different meaning of "rule-consequentialist" in mind than you, apparently. (I'm not too familiar with the vocabulary of such discussions, sorry!) Thanks for clarifying.
Both you and Eliezer made good arguments and points, they just happened to already have a name in the philosophical jargon.
If you're interested, the Stanford Encyclopedia of Philosophy at plato.stanford.edu is the greatest repository of philosophical knowledge on the Internet.
They have an article about rule-consequentialism: http://plato.stanford.edu/entries/consequentialism-rule/