CMY Profiles

Greetings,

I am interested in making a CMY profile. In either iProfiler or MeasureTool I see not way to limit my target / chart to only CMY. I have the measurement data that I used to make a CMYK profile. I noticed in iProfiler if I use that same measurement data and set the Maximum black slider to 0, my profile will contain no black.

Is this a valid way to make a CMY profile?

-Bill-