I had, and PDF::Template looks really nice, especially for the reason you indicated: it plays nice with HTML::Template. The difference for me (and I should have been more clear) is that PDF::Reuse takes an already existing PDF in. I have a very complex form with shading, boxes, logos, addresses, etc. That I just need to fill-in-the-blanks. Since that's all static, I can just punch it out in a desktop publishing package instead of having to code the pieces.
I do appreciate the suggestion though. I kinda forgot that PDF::Template was out there...