@bill t, thanks for the praise
Just to finish the thread, I have switched to using Argyll CMS as it seems to deliver better results than the software provided with the colormunki and is much more configurable, not hard given that the shipped software offers no configuration at all.
On a side note, the device came with a plastic "cover" that seems to be the same ambient light sensor head that ships with its more expensive sibling the i1, and it does seem to work with Argyll in that capacity, altho there is no mention of it in any of the colormunki literature. I have nothing to compare it with so it could be they are using a different plastic in the same mold, meaning it does not perform as it should. Its odd that they have included it and then not mentioned it as a feature.
So after a little usage, it seems that for the price it is a pretty brilliant little bit of hardware, just a shame that the shipped software does not make full use of it. But luckly there is Argyll which can unlock its potential.
NB. I strongly recommend covering the suckers on the underside of the unit, I have cut a doughnut of glossy card that they can stick to, as it did manage to damage the first monitor i tried it on, it now has little slightly darker circles in the center of the screen when showing light colours, luckily it was an el-cheapo that I was trying to find a reason to replace...