Pugsley's ride really well in all conditions, and are great for "slow going." They pedal lighter than you would expect. Climbing is not the most awesome, and you have to get used to how they turn. They turn when you lean, they turn when you steer, it's a bit different each way.
once you get used to it, which doesn't take that long, and once you know they will be "slower" on flats and climbs, you will enjoy it.