[bermanoid]

As in no, you didn't consistently get within 10% of the IOPS you provisioned at their promised 99.9%? Or were there other problems?

I'd be pretty surprised if they were going live with this without being able to deliver, especially since this is likely to be very popular with people using EBS for databases under fairly consistent loads. It's one thing for I/O to suck when they're not actually promising anything, but it's quite another when you're very specifically paying for a performance guarantee...