The web designers, web masters, and marketing people that I have dealt with or deal with are well-meaning people but are concerned primarily with the "appearance" of the page. That does not however negate the need for appropriate disclosures.
I am the Wealth Management Compliance Officer and what I did when our site was re-designed, was review each WM page on the site. I evaluated each page and determined the need for disclosure(s). On some pages we have as many as 5 or 6 different disclosures, but I don't have any that have both the "Member FDIC" and the "Not-Not-May".
I would first direct you to the Feb 15, 1994 Interagency Statement on Retail Sales of Nondeposit Investment Products - sorry I don't have a hyperlink for that reference.
Second, you want to avoid customer confusion. By putting both the Member FDIC and the "not-not-may" on the same page, you might run into a potential problem, if not from a customer, then possibly a regulator.
One compromise solution I came up with was to build disclosure table that contained all of my disclosures. I numbered them 1 through whatever. Then the web folks built a separate disclosure frame on the bottom of each page. I told them which disclosure numbers applied to that page and the web folks programed the disclosure number into the frame. Once that was done, the frame, pulled in the text automatically. A major benefit to doing it this way - when the wording on a disclosure changes, it now only needs to be changed once in the table and the change gets pulled in automatically to all pages that include that disclosure number.
Hope this helps and Good Luck!