I have to say, after riding two trips on Monday behind it, and seeing it around a few times, I really am impressed by just how quiet these things are (maybe I should say this thing, since this is only based on one unit). It appears to have been on 202 this morning (as I think it's still paired with 1631). As I live only about 250 feet from the tracks, I can usually listen for 202 passing as my reminder to get organized and out the door for 204 if I'm not paying attention. Even in the winter you can clearly hear the older units inside the house. Not with this thing! I'm sure some railfans might lament the "lack of character" but I think that these will make life more pleasant for many people who live near commuter rail lines and don't share our opinion that that's a good thing.
And while it is running with a shorter and lighter consist than it'll likely see on the south side, even from a passenger's perspective you could even tell the difference in acceleration.