I can confirm that Liberty 0.9 does install over the top of the new .602 leak. I'm pretty sure most of the .602 system is over-written by the Liberty install, but it does keep the new .13p radio post-Liberty install.
I did notice upon first boot the phone didn't see the radio, so I setup everything via WiFi. When I rebooted, it did see the radio and everything worked fine (so far).
I'll continue testing and post any strange occurrences here.