I went to an AT&T store and played with an X for about 20 minutes yesterday. [...] Love it.
I did the same thing and had a near exact experience. I also couldn't really take a good picture, due to the damn security tether, lol.
That said, it did feel great and was a very responsive device. The display was quite nice, as well. I mostly liked the "Ok Google Now" functionality, which I also tried in the VZW store with the Droids (it's funny to see them all respond in unison), but it also speaks to how good the mics are at cancellation. Physical size it outstanding, with such a big display fitting easily into one hand, while the volume/power keys were very solid. It without a doubt passed the "wife/lady" test, too, if that matters, as she without a doubt wants one.
That said, the thing which sucks about store models, is that you just cannot get a grasp on battery life. I can deal with a camera that's anywhere near or better than my GNex, but the battery life is still something I'm skeptical about, with regard to the CDMA model.
Also, AT&T/Moto should have taken the liberty to show
ALL the rear colors, at the very least, if they were going to claim/offer exclusivity at launch. Thankfully, I got to see the white textured backing (and I've now ruled it out as a possible option), but I think it would be critical for people to see some of these colors in person, before purchasing (seriously, who comes up with these campaigns/pushes? Why isn't there a floor display for this phone, alone?).