I am actually not a fan of its use in the G+ app. I prefer the dashboard because it felt like there was a more defined separation between each part. I don't particularly like the new G+ look in general for the Stream since it feels like there is way too much going on, and I guess the menu just adds to that.

Neither have I. That says much.

In general, I dislike having anything to interact with in upper left corner. Hard to reach.