I was looking into that one a while ago, I believe it comes pretty close when using there recommended rip. They also have an auto calibration process. It has problems printing out B+W print's without a color cast, but but I recall there are special drivers you can use to get it to print better.
However that printer's been around a long time, and might soon be outdated. I would look into the Epson 7880, it is SWOP certified when used with the ColorBurst rip. I have sample prints from both printers and I favor the Epson and would consider it a better choice. The printing shop I work at uses an HP Z3100 for proofs and it matches spot on, however I would look into the 7880 with the colorburst rip combo.
Epson 7880