I have one and have taken the obligatory daylight (and flash) photos with my cameras and imported the images into LR. I then used the bundled SW to generate the profiles and tend to use them when I import photos.

However, even though I apply the profile to the camera in LR, various Plug Ins that I use in CS6 tend to alter the results. So although I start off with a good baseline, I tend to end up with something a little different.

I do this more as a fun and interesting technical exercise as I enjoy messing with stuff, rather than some altruistic desire (or requirement) to record colours and tones faithfully.

Cheers

Dennis