I know this has been talked to death but is there a D&D LARPing fan behind RED's naming conventions? Do they want people to sound like little kids when they call rental houses and ask "Can I have a weapon dragon please?"
I always export out of premiere prores 444 and then use compressor or QuickTime 7 for h264 versions. Not only for quality but overall compression time, even with exporting twice, is faster. The benefits of premiere for me outweigh using fcpx just to export an h264. A good thing to be aware of though.