So I've given this a lot of thought these past few days. I've decided the sensible thing to do is to make my decision after the GF5 keynote. There is only one thing that would sway me to the GF5, and that would be dust resistance. I'm not expecting that from the GF5, but I want an answer on that front before making my decision.
That will also give me time to read GPF reviews, etc. No need to rush this. It's a big purchase/decision.
$1,800, if true, is a mistake by Google. Better to offer it at $1,700 and undercut the GF5.