Most of the Alphas that are out are pretty stable but the biggest thing is no camera support. They will have to wait for HTC to deliver a ICS build do they can get the drivers for the camera or someone will have to write drivers. I would probably say end of January or early February before we get a solid ROM.
Once the 3vo gets the ICS update its on like Kong!
Or if htc releases any phone with ICS for that matter. Once 1 single ICS htc phone is released we'll have a port.
Patience young grasshopper, soon you shall walk on the rice paper without tearing it!