We have a little over 300 miles so far and the poweshift has been silky smooth and seamless. Under aggressive throttle the shifts are firm and solid just like a well shifted manual. Under cruising you can hardly tell it is shifting.
The only thing I have noticed is when pulling a way from a stop with light throttle it is starting in second gear and if you the jump on it it will down shift to first. There is a split second hesitation in this down shift. If folks hadn't been complaining about how the tranny shifts I would never would have thought about it. All the automatics i have had over the years have had some sort of hesitation under some transitional condition.
Overall I couldn't be happier with the way it shifts.