He meant every word. Travis didn't have the patience to be a cunning liar, so generally he settled for brutal honesty, and that meant being completely forthcoming about things because he felt no insecurity. What he did feel was irritation for Keona's wound. She didn't heal properly, like a person would, thanks to her powers. He did smile just slightly, though, when she announced that his eye was back. Yeah, it most certainly was, and it was a perfect match to the other and everything. Normally, if he'd removed that eyepatch, there would've been just a glow there, but now...
"It does that. I said I got power from pain and wounds, and my eye got wounded somewhere prior. But every time I take my demon form, it uses up the energy in battle, and then uses my own strength to repair the damage. I can put it back or not as a human and keep the energy boost, but it just uses up the energy when I'm a demon, naturally."
Another reason he felt bad about Keona's wound: He undid his without effort. It was literally automatic.