My experience based on the 1st generation Time Zone:
1) The pusher at 8 o'clock to advance the cities is indeed more resistant. It's very distinctive when compared to the buttery-smooth pusher at 10 o'clock.
2) Unfortunately, the cities can only be advanced in one direction. It's a shame that this was not improved in the 2nd generation Time Zone.
Another quirk you have to take note of is that it is a complicated to do the initial home time setting. I would recommend leaving that in the good hands of the boutique, or youtube if you are feeling adventurous my friend.