It eats up 4300MB, 4.3GB of RAM. Binary to Bloom; I am sure if it was loaded via text file, it would eat up a lot more. Also, I doubt this will work with Bitcrack or any VanitySearch forks.
Why wouldn't it work? Because those are set to use .txt files instead? What would you recommend using instead of Bitcrack &co?
I remember (long ago) trying to load like 32 million addresses in the original VS or a fork of it, and it would load them but then not run. I think the same was true for Bitcrack. I would say try them and see, maybe something changed.
I have been testing on my own modified versions of VS and KeyHunt.