I created an account under my real name (e.g., not Dr. Edward Morbius, an homage to 1950s SciFi), shortly after the public beta was opened. I closed it a few weeks later when the "Real Names" policy was starting to be enforced. I created a second account, as Edward Morbius, another few weeks later, to see how things would evolve.

I all but killed that with the YouTube Anschluss.

So, yes, there were people who created accounts, and a large number of those I interact with on G+ (a couple of dozen folks for the most part) who did similarly.

Which isn't to say I'm not still massively conflicted about the site.

I created one on purpose when they promised more privacy with the circles thing. I promptly stopped using it after their mass merger with other services ( the merge with YouTube particularly annoyed me)