Mine used to be, but between 100 domain names with email, 2 home numbers, work phone and Skype (9:25 tonight - resolved 2 of my customer issues in Hong Kong and Cairns on Skype) I can live without the mobile attached to my ear as well
My Skype added to my contact details above.
Still don't really trust the science as yet that says they are safe, but hey, can not live without them, when I want to / need to use it, would not be without it ....
Canon or Nikon - does it matter, the trick is to master whatever tool you have - but definitely NIKON
D90, 18-200 VR, 50mm 1.8, Micro Nikkor 55mm 1:2.8, Nikkor 28mm f 2.8 & Tokina 11-16 2.8, SB24 Flash, etc etc