Just got my GSM one today, and this is about my experience so far. I am having a lot more trouble, and concern, over mounting the internal storage, as I run Linux. I tried libmtp, but it just timed out, though I could at least see the files on my device. Some experimentation needed.
Plus, no flash or Google Wallet yet, which is odd. Going to the Google Wallet site says that it's exclusive to Sprint Nexus S phones still, I hope they fix that for those of us who told Verizon to go to hell and went with Google itself over any carrier monopoly.