Not only on Nexus 4 also Nexus 5 and there is some info about OPX and some about running aliendalvik on Nexus 7 too, but it's not about running android on them it's about running android apps on them. Trust me, no one in this thread would ever even speak about android if SFOS had the same apps, especially the most used ones.

P.S. i would appreciate if someone modified name of this thread. It's not just Nexus 4 It runs on Nexus 5, Nexus 7, (OPX has some problems but i believe it's some library issues) maybe it will run on some other ports too if modified correctly. sadly i can't test it. I have only N4 & N5 and i can confirm this works on both of them. On N4 i even have play store and play services