Sorry gromit, but you're rather missing the point.
A spectro will have a degree of error both in absolute accuracy and repeatability, but that can be ascertained with testing and you can get a good idea of how accurate the instrument is in practice. For my main instrument I see better than 0.14 DE.
The data analysis module of Profiler will be able to help test and calculate these sorts of errors.
So once you know the degree of error possible for your instrument you can then go on to measure colours on different devices with a known degree of accuracy.
The problem (design failure?) of the QA module in Profiler is that it seems impossible to define what standards it's measuring to, (luminance, colour temp etc), if you haven't built a profile for it to measure. In other words, if you wish to use another software product to calibrate and profile your display with (eg Spectraview, Multiprofiler or the Eizo products) Profiler can't be used to independently validate the quality of the display. A facility that would be useful and I had thought was being included within the product.