It looks great, and I think is the perfect lockscreen to use with the PGM Touch Control mod that's now available for the N4.
Here are the two original threads which contain info about the lockscreen and how to port it.
I don't really know how to do this stuff but if anyone else is interested it would be great for the rest of us
Blackberry 10 Lockscreen MOD - Android dev & hacking
Blackberry 10 lockscreen MOD - Galaxy Nexus thread