I know it's stating the obvious, but I will just point out - to fit this rack you will either need to drill holes into your roof or else modify the mounting posts somehow, it's not a straightforward clip on design or anything. Best make that totally clear just in case, although I'm sure you worked that out for yourself.
On the car it came off, it had wire branch... things... whatever they are called... running from the roof rack to some pins on the front wings - you know, to stop branches hitting the windscreen? Anyway, the two circular mounts for those are still on the front of the rack so perhaps useful for attaching things to. Other than that, it's just as you'd imagine - the bars run underneath the chequerplate so you could always remove that too if you didn't want it:
On the car it came off, it had wire branch... things... whatever they are called... running from the roof rack to some pins on the front wings - you know, to stop branches hitting the windscreen? Anyway, the two circular mounts for those are still on the front of the rack so perhaps useful for attaching things to. Other than that, it's just as you'd imagine - the bars run underneath the chequerplate so you could always remove that too if you didn't want it: