I'm still running my 6950s while I wait for my ASICs to ship; when they show up I'm pulling the cards out of it and it'll become the ASIC controller for all of my various ASIC boards. No sense not running them as they remain profitable thanks to very low electricity costs.
I really hope it's not a scam, as I've bought in pretty heavily, and I'm just sitting here lamenting how quickly the difficulty and aggregate hashrate are skyrocketing.