Having owned rear bumpers with tire carriers built-in, I can personally say that I hate them with a passion. That's not to say that there isn't a good one out there (I believe the Metalcloak one is very good, but it's also something to the tune of $1500).
The cheaper ones are all garbage though IMHO. The swing away tire carrier starts to sag after time which makes it harder to just swing open and close, it's also a pain in the butt to have to open the carrier anytime you want to get into your trunk (I think so at least).
That being said, I don't know which rear bumper that is unfortunately.