Don't do it.
You can't see ANY of your notifications, except Facebook ones, until you go into an app that shows the status bar.
Get a text? You'll never know.
Same goes for email, twitter, app updates, and anything else that'll show up in your notification bar.
It requires system level access to display non-Facebook notifications, This means either you buy an HTC First, or are fine with rooting your phone. And I'll be honest, I haven't even verified that that works.
(note: This is all third party info. I have no desire to ever touch Facebook, even with a Regulation 10-Foot Pole, but I know some people who were interested enough to dig into Home )