In reply to CharlieMack:
I done it about 2/3 weeks ago and didn't place any rock gear, all gear was on screws and most belays as well. There is a couple of bits of tat at the end of P1 and 2 but you'd probably want to back them up with screws (they were just sticking out of verglassed rock).
5 screws is probably fine if you don't mind running it out a bit and totally trust the tat at belays, personally I wouldn't and felt happier with 7-9 ice screws.