That's a good idea. To expand on that, I think it would also be useful to have the ability to hide msg (query) windows for a specific channel... perhaps with only one visible at a time for that channel. This is, of course, optional. The use of this is for those who visit music channels and can sometimes get 50+ msgs to a search request. That fills the switchbar and can make it hard to get at other things you might need.
Another use of that is if you need (or want) to keep queries open to many people for easy access to what you have said in the past, or current, conversations... these can also fill up the switchbar and make it a pain to find other things that are open. Sure, there's the Window menu... but even that is a pain to sort through when there are many things open at once.
