The distinct advantage that I found in using Moose was the ease with which the job could be accomplished reliably. The concept of “roles,” in particular, allows for a lot of useful functionality – in this case, particularly serialization – to be leveraged very easily and reliably.

Since Moose is built on regular Perl 5.8, clearly anything that can be done in it can also be done without it, but this is a better mouse-trap.