Good review... got to admit that I am kinda curious. I think I'll have to give em a go now, although I've been playing slinkys for years. In fact, aside from a few failed experiements I think I've been mainly playing slinkys for over 20 years! I remember having a little Earnie Ball sticker in the back window of my Nissan when I was 17.
I think there's something to these strings because, let's be real, I'm a hack. I mostly play warp speed and don't care about many of the typical nuances of finer guitar playing. If I can notice these differences, then a good player might notice even more.