I've been riding for a long time... and I've always dug this idea, but I've never seen it implemented in a way that looked like it could work properly... until now.
These beds give you immediate response and are specifically good for carving. I notice that they help on long flat cat tracks, but they are STELLAR in helping you hold an edge. I feel so much more in control with these.
On the downside they do not provide much cushioning. But if you're willing to give up some of the extra soft beds for a bit of extra control, they're well worth it.