Go for it. My appreciation for today's good templating modules is at least partly from my experience trying to maintain my own and seeing how quickly it becomes a nightmare.

Complaints about reinventing the wheel mostly have to do with people who are wasting time on paid projects by doing unecessary work, and people who are contributing to the clutter on CPAN by uploading more and more nearly identical templating modules. (Incidentally, there have been a slew of new and pointless template modules showing up recently.)