I get 4.5MH/s on gtx980 2.5MH/s on gtx750ti and 1.3MH/s on 750ti
Impressive! (and now I have to dig through the forum to get NVidia to AMD convert ratio for X11 
)Mine is not, and my only R280x doesn't affect hashrate too much
But:
If someone releases a GPU miner though, or if we suspect people are using them, we plan to release ours to everyone.