Well single binary would be nice, but I don't mind compiling multiple binaries. The important thing is that I want a single codebase, and that I am writing it in an easy-to-use rapid development environment (why I am trying to pick Perl/Tk). I have minimal time to spend on this side project, so every minute of my development time is at a premium.
Plus I enjoy writing code in Perl/Tk. I'll give PAR a shot.