I would not think this would fall under the heading of "unequally yolked". I certainly, when I get to the place where I can wed and give pre-marital counseling, would marry a couple with one credo and one paedo member as long as we talked through the issue and made sure that it was not a factor that would cause division later.

(I of course would try and counsel the credo member of the union as to his/her position)

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Benjamin P. Glaser
Pittsburgh, PA,
Fairmount ARP Church
Candidate Under Care Pittsburgh Theological Seminary & Reformed Presbyterian Theological Seminary
"The benefit of deliverance becomes the more precious in the same proportion in which we are brought to apprehend the magnitude of the evil from which we have been rescued"
-- Zacharias Ursinus, Commentary on the Heidelberg Catechism