Faith is also the gift in that verse, that's why the phrase 'and that not our yourselves' is there. The 'that' is referring to the faith, and there is an emphasis with 'kai' on adding an additional thought, as you can see from Greek grammars. He is not saying the 'faith' is something we 'contriubute.'
When the objective things of the Gospel are declared, you can tell who is the 'workmanship' or 'creation' of God (v10) because they respond in faith and realize that all of the above is not only FROM God but FOR him. Otherwise the sad truth is that the person is kept dark, 2 Cor 4:4.
In my opinion, you're "Dead Wrong." Hope that doesn't hurt your sensitive ego too much?