No. If it were, I wouldn't even consider using it.
Switching between multiple interpreter installations is pretty easy (a drop down in a preference pane) -- it will find every interpreter on your path, and can index anything defined in $PERL5LIB for auto-complete goodness.
The debugger is great -- I love being able to set conditional breakpoints using a possibly complex expression in the native language (not just simple var=val type things).