I'm very happy to be able to post that the Audit Logging Plugin is now available via the "official" Grails plugin install commands. My plugin is no where near as cool as the Searchable Plugin but I'm very pleased to offer it up. I hope it fills a need judging from the relatively large spike in traffic I got from other blogs and sites like refactr I'd say there's quite a few people who might want this plugin.
You know who you are. Now you can send me bug reports!