Yup. It's still kindof a pain. What would be a cool feature would be a button that would open a tab, and list out the users in a format such that you could copy/paste them into a reply. If I knew anything about greasemonkey and javascript, I'd try to do that myself, but alas, I'm not quite up to it, though I will take a look at the script and see if there is any obvious way to do it.
Not really quite so easy, but see my post 77 for step by step instructions on how to do this.