After much searching, poking and prodding, I finally took the time to read the first line in the docs (http://maven.apache.org/plugins/maven-eclipse-plugin/examples/ajdt-projects.html): "The Eclipse plugin interacts with the Aspectj plugin to configure Eclipse to use AJDT." I had assumed, looking at their sample, it was present to configure specific things in AspectJ, and omitted the entire definition since I had no use for those configurations.
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>aspectj-maven-plugin</artifactId>
</plugin>
Adding this simple plugin to my