Oh yes, just restore your 9.2 NAND, set up menuhax, then set up Luma3DS and you're good to go (Luma boots into EmuNand by default)
(For the record, if you have hs.app from earlier before you undid the process, you can actually just re-inject FBI_with_banner.app and it'll give you back FBI on SysNand... But restoring 9.2 is way easier honestly)
I'm willing to try following the new CFW guide again, but how do I get all of my games and saves back? Because they weren't there when I actually managed to boot into RedNAND from Luma3DS.
This isn't ideal because menuhax only worked 75% of the time...and Luma3DS rarely gave me anything other than a black screen...the DS profile exploit I had worked 100% of the time.