I definitely hear the announcements a lot... whether or not they follow up "e-cigarettes and spare lithium batteries" with "and other electronics" or "such as those found in personal electronics" is very hit and miss.
At my regional airport they just hand out the tags and don't ask any other questions or offer any other guidance to each individual passenger. It's just the one main blanket announcement.
I think unless they are checking for them to the same extent that they are checking for liquids and weapons in carry on it is likely that plenty of people aren't following the rules either intentionally or from ignorance.
At my regional airport they just hand out the tags and don't ask any other questions or offer any other guidance to each individual passenger. It's just the one main blanket announcement.