Randy: You didn't miss anything, there is no limit like that. I think the uncertainty came from the way the proposed rule read back in 2007. The requirements for not adding other information were so stringent that my comment letter, as well as a number of other comment letters, asked the regulators to clarify whether the model form could be included in a document with other information or included in a mailing with other information.
As a result, the final rule clarifies (on page 62898 of the Federal Register version) that the form may be included with other information as long as it is still clear and conspicuous, intact, and with the page orientation, content, format and order specified in the rule.