I've used it since the start and it's pretty great.
Recently I noticed, I stand at a bus stop, refresh the google now screen and it shows me the relevant bus times, for my actual stop.
However, I wish it could actually notify you. Unless i'm missing something really obvious, you only get info when you open your notification drawer or google now (both manual actions).
I used to have the homescreen widget take up a whole screen, but it doesn't show nearly as much info as the full app. I'm in the habit of launching it very frequently now, but notifications would be better (customisable ones). OR, maybe they could actually make it a homescreen that is movable like a normal desktop (the current way is to scroll all the way to the left when traversing screens, or swipe up on the launcher icon).
rp2000