can I configure pom.xml to allow local installation without GPG?

I have a project set up using your Maven examples. The configuration works, and allows both local installation and deployment to the central repository. Unfortunately, as configured, it requires the user to install GPG and provide their password each time they do "mvn install", which is a nuisance. I can work around this problem by instructing the users to disable the Maven GPG Plugin, but then the configuration does not allow direct deployment, since it is creating unsigned artifacts.

Is it possible to set things up so that local installation does not attempt to sign the artifacts, but deployment does?

My pom file is here: https://github.com/jdbc-json/jdbc-cb/blob/master/pom.xml

Instructions for disabling the Maven GPG Plugin are here: http://www.michaelpollmeier.com/maven-skip-pgp-sign-process