I think he was referring to the "top notch" developers being unwilling to learn, which to me would disqualify them from the category of "top notch", no matter what how good they are at using their preferred toolset. I'm curious, if they are so resistant to learning new things, how well do they deal with changes in MSVS? Like for instance going from 2008 to 2010, the solution file format changed (and the importer is far from perfect), and things were moved around in the GUI.