Yep they're dreadful - I haven't used them but a friend bought some and they were awful, leaked, took FOREVER to dry and weren't hugely absorbant either... Caused her no end of problems! What with an off the charts large power-wetting baby, prefolds and kushies/kooshies she gave up on cloth pretty quickly and I'm not suprised!!
I have tried Kushies and I thought that was what all AIO's were like. They took an age to dry, weren't all that soft, they didn't contain newborn poo, and they weren't that absorbant. One of the guys at work told me that for their newborn they had bought a heap of Kushies (before baby was born), and I said ohhhh. I then lent them some little lambs and showed them some of my pockets.