I have been using it for a couple weeks without a problem. It uses a USB adaptor to connect. I have a HP 455CA which was nothing but problems with the HP supplied RIP.
X-Rip currently only works on 10.1.x but they promised they would support 10.2 and network printing. With that said I would recommend it. There is no RIP program to run, it acts like a print driver should and uses the print center.
btw, If I made printers and released a printer with such crappie software the way HP did I would be too embarrassed to look myself in the mirror!
I'd love to see a class-action law suit make all these companies support hardware for more than one year!