We're still getting our feet wet and getting used to the system. It has allowed the players to contribute their own improv onto the world, which I think is just amazing. The downside is, as the dungeon master, I have had to be on my improv game a lot more too. Easy for the 3 players, they don't have to be speaking for a collective 60% of the time. This game lets them talk way more often than others though, which is appreciated all around.
So far, they've avoided some of my combat hooks, but the one that they did come across, while traveling between cities, played out in a very interesting manner. The back and forth between players and DM was pretty natural. I jumped back and forth between players, usually in an order, but I wasn't forced into the same order every round. Hell, there weren't even rounds. I'd declare something that was happening, and they'd react to it, sometimes diving behind a tree, or risk trading blows by trying to get the shot off first. Neat.
Our players are Radagast the mage (played by Aaron), Fuln the druid (played by Sean), and Meatball the ranger (played by Anthony).