I'm an illustrator recently switched from apple to Linux and I'm darn happy about it!
The only thing that got me a bit worried is the color profile for my screen. The other day I went to print an illustration and the colors were pretty wrong. So to solve that I've looked for various calibration programs and found that only a handfull of old chunk was available, and if you would like to use that then you came into a settings page where you have to be a professional to use it right.
A lot of people are changing these days to donation software -including Gymp, Inkscape and offcourse Linux- but I find a lot of fellow designers and illustrators being a bit of negative about this color-proofing thing, which actually is the only thing they worry about.
To be short: ICC color profiles are -in my opinion- pretty much a useless thing, when I make an illustration it just needs to have the RGB color codes right for the printer to understand, and it would be great that I could go to the printer, print out a red-yellow-blue-black stripe on paper and hold it next to my monitor and THEN have a little handy-dandy program that would be able to set the reds. yellows, blues, contrast and gamma right so it would see just like on the paper. 5 Settings, that's all it needs to take.
I've been looking on the forums and internet but everytime I find a post or article it comes out with no/negative responds or pointing out to the same dificould programs as ever.
If there would be something like that then it would most truly get some awesome responds, most of all from the design peeps.