No that’s likely not worth it 
I’m using mine on the inside of the roof as well.
Yes the LNA needs some power and that is fed through the coax (you need to enable it in software, there is a guide how to do it (Getting the V3 Bias Tee to Activate on PiAware ADS-B Images))
Without power the LNA will block signals and you get literally no reception 
The blue stick already has an advantage over the orange stick regarding filtering: Like the orange stick the signal is amplified but then is filtered internally where the orange stick has no filter.
The filtering done by the rtl-sdr LNA is superior though and also the noise floor of the LNA is probably better. (very rough filtering comparison (Testing Signal Quality with Spectrum Analyzer? - #6 by wiedehopf))
Note that i’m not sure if i get the extra performance because of the filtering or the LNA is just better.
Maybe a combination of both. But i do notice fainter signals can be detected.