I'm kind of in both categories. I will buy one immediately for my wife, but for me I'll wait and see Xphone; especially since I just got a nexus 4 a couple months back.
I'd have to agree on this. If the X phone was going to be available in the next 3 to 5 months google would have at least leaked a little something around MWC. Maybe they are keeping completely tight lipped until I/O, but the only thing they said at MWC was aimed at managing expectations with the whole "Moto still has a lot of commitments in the pipeline" bit.
Maybe in time for Christmas, but Moto has been on a really bad delivery timeline the last couple of years. I wouldn't be surprised if it slipped into next year.