I personally think that the docs might use some clarifications directly in encode and decode to change people's expectations. I'll try to propose a doc patch where this possibility is mentioned explicitly.
Update: just sent a Pull Request at https://github.com/dankogai/p5-encode/pull/54.
Update: merged, yay!
perl -ple'$_=reverse' <<<ti.xittelop@oivalfIo ho capito... ma tu che hai detto?