I've been luckly and unlucky at the same time about catching shiny Pokémons in my X Version.
The first one I found was a shiny Gible, that killed itself because of the recoil of Take Down.
The second one was a shiny Lickitung, found in the Victory Road and luckily I caught it.
Than I found and caught a shiny Shelmet and a shiny Cubchoo.
Now here's the crazyness: I found FOUR shiny Geodude in a few days and I managed to caught only two of them, because the others were killed by Magnitude, used by the others Geodude of the horde.
And I also found two shiny Floatzel, but I've caught only one of them.
And finally I found and caught another shiny Lickitung.
So, recapping, my shinies are: 2 Lickitung, 2 Geodude, 1 Shelmet, 1 Cubchoo and 1 Floatzel.