Care/encryption of firewall rules

Kerio encrypts the firewall rules on-file by default. Instructions on the web for decrypting them contain a step seem to imply that disabling them should be temporary. Considering that many security experts publish good sets of rules, and the fact that home users normally often don't have the same IP address from one DSL session to the next, how important is this encryption really? This question is motivated by the idea of saving an unencrypted copy of the rules as an email on a mail server somewhere (not my own, of course).