He's probably one of those guys that's scared of using the white products for fear of being thought "less manly" as well.
I always chuckle to myself when I see some guy using a black iPhone, knowing that at least half the time this is probably their main motivation for the choice.
The white iPhone looks alright, though it is mostly for females, IMO. I bought a white iPod Touch as a present for somebody last christmas, and the recipient was obviously a female.
The main reason that I prefer my black iPad to a white one is simply because I find a black border to be far less distracting than a white border.