Does the book cover anything regarding building Griffon-based solutions and integrating them into existing Swing applications? I'd love to go wholesale Griffon, but the chances of buy-in on a full-on tech transfer are essentially zero.
Yes. The View chapter covers how you can reuse existing views that were built using NetBeans Matisse ot AbeilleForms Desginer. The Controllers & Services chapter shows you how you can wrap existing logic.