There are working on a 64bit version of EnergyXT
https://www.xtsware.com/?page_id=6 that is free to try/alpha test.
Biab worked great with the 32bit Plugin version allowing you to add so many extra tracks to Biab before Util tracks were in as they finally got the Vst Sync implemented. So look forward to the 64bit Plugin version to have a DAW inside Biab.