11, Since you've switched over to modeling, you've already taken the biggest step. I don't think I'd jibe well with IEM's either, but once you've switched to modeling, you're on the path to lower stave volumes. You just need to make the others in the band do it as well. Second step, (IMHO) get a full shield kit for the drummer. Then everyone else can cut their volume and still hear better. Most importantly, don't wait! What's gone is gone, with hearing, but you can stop it now before it because a much bigger issue.