So I'm just A/Bing those now, and the effect is
extremely subtle, to my ears. I think the idea is very interesting, but I've got to confess, I can't really hear it doing anything that remarkable.
In the SOS review, they say as much, but they also say it seems to make the mixing process seem a bit easier and quicker. They also point out that there was a rare amount of consensus in their office about it, with pretty much everyone becoming a convert after using it.
Anyone who's used it got a view on that?