Soon after HP announced the availability of Open webOS 1.0 Edition, the WebOS Ports team made a new announcement of their own -- the porting of the open-source operating system to the Samsung/Google Galaxy Nexus. They did not waste any time...
The port is in the early stages of development, and accordingly it's a work in progress. Hardware acceleration is not yet implemented, but according to The Open webOS Project Blog the team is working on correcting the issue. A video has been posted detailing a functioning Open webOS running on the Samsung/Google Galaxy Nexus without any apparent issues aside from hardware acceleration, a good sign considering the narrow time-frame since HP released it.
For someone that is interested in modding, running the Open webOS port once publicly available might turn out to be an interesting experience. I will sure give it a go once I can get my hands on it...