I've been working on a grails plugin for Mongeez. My company is going to try using it internally for a while before attempting to publish it to the main Grails plugin portal. In the course of working on it, I ended up making a few changes to Mongeez itself. Please consider the pulling the referenced commits. I'm willing to re-work changes based on feedback, if desired.
To get the snapshot you need to add sonatype-nexus-snapshots repo into your pom.xml
<repositories>
<repository>
<id>sonatype-nexus-snapshots</id>
<url>https://oss.sonatype.org/content/repositories/snapshots</url>
<releases><enabled>false</enabled></releases>
<snapshots><enabled>true</enabled></snapshots>
</repository>
</repositories>