I have a commuter case on my galaxy nexus and love it. I usually run my phone naked but when I don't the commuter is my first choice and I can't imagine needing anymore protection then what it provides.
I will eventually get a commuter for my n2 but I'm surprisingly loving my Verizon kick stand case and the kick stand doubles as a place to put my finger when reading in bed eliminating the dreaded phone to nose drop haha
The N2 will probably be the first phone I own that never goes without a case. The size and slickness of the phone make it too slippery not to have a textured case