I have hit with it. My hitting partner/stringer is sponsored by Solinco. Neither of us liked it, and we both love TB. I wouldn't say it was terrible, just seemed a bit vague to me. I also found the bright green color a bit distracting on forehands. It sounds ridiculous but the bright green in my peripehral vision bothered me. i suppose you would get used to it.
He had another demo string from Solinco that was a heavily textured rough string. It was fantastic. Great power and unreal spin, plus it felt like a multi. No idea what it was.