Cuetec did fiberglass over wood iirc. Don't recall any carbon-fiber cored CT cues, at least nothing using the carbon-fiber available today. We'll just have to wait for the reviews to start. As for CS? I've only had one instance where i had a problem(ferrule related) and they took care of me PRONTO. No complaints here. I've heard the stories but my deal was taken care of well.
I distinctly remember Cuetech offering a couple of different designs of carbon core shafts. That is, carbon core under wood...much like what this new OB shaft is advertising. I’m sure there are differences. I’d just like to know what they are. I’ll do some digging and see if I can find any info on the old Cuetech carbon core shafts.