I've also taken a stab at creating a gwizard-metrics module (
https://github.com/stevesea/gwizard)
At the moment, it's pretty dumb.
It builds my other changeset for gwizard-services to start/stop the JmxReporter from Metrics. And adds some JVM metrics (the same ones Dropwizard exposes).
And it installs the MetricsInstrumentationModule from metrics-guice, so any guice-instantiated class can use the @Timed, @Metered, @Guage annotations.
-Steve