As requested, here is a quick video from this afternoon. Sorry for the low-light conditions but it gets dark early now that we're off DST.
Note the roll rate at full sweep - it literally rolls in the blink of an eye (-3:05 you'll see three sets of rolls). It's much slower with wings at half-sweep (-2:08). Also note the high-alpha - rock solid with the wings at half or no sweep. Hope you enjoy.