Which makes it a great addition to title bar dragging but not a replacement.

Depends on the user to be honest. I quite dislike title bars (Especially if fairly bulky.) and so I remove em. I know they're necessary for people who aren't as apt with computers. But to me their main purpose has always seemed to be...identifying the programs i use every day and are fairly easily identified regardless.

I use it exclusively, don't remember the last time I looked for the title bar.