Re: Who does IC layout?
I would say it depends a lot on what do you want to layout. Digital is generally easier than analog, low speed is WAY easier than high speed, and the size of tech you are designing for (try 45nm, its VERY diferent from 350nm). The idea in layout, at least to be a good layout engeneer is to really understand what the circuit does, how it does it, important signals and manufacturing process. If you understand that, you will know what you are doing when you layout a high speed analog circuit as well as a slow speed matching critical device.
But all in all, I think if you do PCB design, you should have a good base to build from..