i've heard already about Dancer, but all examples were self-contained, i.e Dancer started its own webserver and my goal was to take advantage of Apache's VirtualHosts in order to not tinker too much about threading, forking, handling whole protocol layer "by hand" and so on.
Also, using webserver's name-based virtualhosts makes my "application" easliy scalable: for development purposes i can have it running on single machine, running single instance of apache on single 80 port, and separate front from back only when usage scenario will require it.
However, i must admit that didn't took too much time to check Dancer's capabiliites.
But if you said that it's wort to give a try, i at least check if Dancer's app can be embedded into Apache's CGI/PSGI