Thanks for the explanation. You're right, I probably read over the rules a little too quickly. I'll reverse this change to be `LOG` and will separately go over the rules in the master branch to ensure `LOG` and `log` are correctly distinguished between statis and non-static members. 

As for the global change to `logger`, certainly would be great. I'd suggest that we open a JIRA for it to be addressed in the near future. There are a number of open pulls on checkstyle changes currently that I'd like to merge before moving any further.