I use camo for sniping. Because lets face it, if you're a sniper loving person, you're just an idiot not to use the best armour ability that makes sniping so much better.
However I hate people who use it with any shotgun or instant kill weapon in excess. I may use it like once or twice every few games. But people who do it every damn match are incredibly annoying. Even though I still beat them :3
And just to clarify to people who would HATE me for using sniper + camo.
I do just as well in any match without armour abilities than using them. And I have a K/D very close to 1.70 overall. So it doesn't make everyone less skilled if it were taken away, just makes it an enjoyable option to them.