ICS is now being developed for the streak. I have been using the pre-alpha build and for me it is now good for use as an everyday rom.
Im not saying its 100% bug free yet but ive been using it for 3 days now and i can live with the issues it currently has now.
After todays update flash is now working and for me that was the only undesirable, with it now fixed I wont be turning back.
The rom is being updated at a good pace and I dont think the beta is too far away.