I've run their profiling software, and Karl is the guy to go to regarding the IO useability.
As far as I know, they never came out with profile editing software. From my own experience, I've never needed it. Like Andrew said, it's a tricky process and like to cause more problems than it solves.
Support for the basicICC software has been non-existent. I would not recommend them as a source if you are in the USA. Try CHROMIX.com to see the range of profiling solutions they offer. They are a VERY knowledgeable vendor representing multiple companies, and have been a pleasure to deal with.