I'm sure it won't be a problem: if PERL needs something it will search the @INC-paths. If it finds it in your home perl lib dir, it will stop searching further. If it doesn't find it, it will search it again in your home perl lib dir(and of course again doesn't find it) and will then fail with an appropriate error. So either it finds it fast or it fails it a little bit slower.

CountZero

"If you have four groups working on a compiler, you'll get a 4-pass compiler." - Conway's Law