Hi Dale,
I just realized that the document about how to customize the toolbar did not mention or link to our document about the Content Style Template System (I've updated it just now so it does), which enables you to define some style presets in your CSS and make them available in the WYSIWYG editors so that users can select some text and apply style. This style system was what we came up with as an alternative for those toolbars specifically, and is at least one tool remaining to you to help keep your customer on the path but of course if they don't go along at least you did your best to guide them in the right direction.
Hope it helps,
Joe