At 40F the All Season should grip better. It might be that brand new tires have slick coating on them that takes a 100 miles or so to wear off.I asked to keep the summer tires and that I would "dispose" of them. They said no, I was not allowed to keep them. The weather is 40 degrees and rainy which may be the reason the grip is noticeably less. The car does drive with less grip on these all seasons. I actually slid coming to a stop at a light on a hill (road was crap too).
Curious if you find them any quieter on the highway.