drawing a blank on that. Do you mean the pc-plus polycarbonate from polymaker ?

Polymax is their super tough pla.
http://www.polymaker.com/shop/

http://www.polymaker.com/shop/polymax/

I do have a roll of their pc - haven't tried it yet. Only thing I would say is that they claim it only sticks to buildtak and there's a square in the box.

I'll most likely try it on my normal pva first.
Haven't had much buggering around time to mess with new filament types recently. But it's on my (very long) list :-)