At the time of writing its 4 days after my last post. I am now standing at Expert 75% and the SLF is 12% Dangerous. I can guarantee that all kills have been a fully shared effort. So I gain 55% at Expert level and the SLF goes from Harmless to 12% Dangerous for the same number of kills.
I read somewhere that SLF pilots rank up about 10x faster than human pilots, but I have a feeling it must be a little more than that?