All of the files that comes out of my camera (Canon Rebel T3i) are not assigned a colorspace. Instead, all files the format IMG_XXXX.JPG/CR2 are implied sRGB and _MG_XXXX.JPG/CR2 are implied Adobe RGB 1998 (in the case of the RAW, the embedded preview JPG is stored in the Adobe colorspace).
I'm using Corel AfterShot Pro 1.1 and trying out digiKam on Windows 7 with assigned ICC profiles for the monitors.