I certainly agree that they are tricky to get exactly right. Kevin Vernon and I spent 3 hours or more doing mine, checking and adjusting before we were happy with it. I'm also running mine with the spacer below the stub axle, giving a low ride height. Everyone I know who has been unhappy with their setup had it the other way round, with the spacer above the stub axle.
I definitely experience an increased roll on initial turn in to a corner, it tallies exactly with the stub axle settling down onto the rebound spring. I rather like it , it gives a very planted feel once you are settled in to the turn. I would imagine that people who prefer to make continuous steering adjustments through corners might find the effect a bit unsettling as they'd be tending to come off and onto the rebound spring, maybe?
